{"id":1085877,"date":"2026-07-29T21:09:56","date_gmt":"2026-07-29T21:09:56","guid":{"rendered":"https:\/\/raidzfscalculator.com\/en\/?page_id=1085877"},"modified":"2026-07-29T22:17:41","modified_gmt":"2026-07-29T22:17:41","slug":"raid-calculator","status":"publish","type":"page","link":"https:\/\/raidzfscalculator.com\/en\/raid-calculator\/","title":{"rendered":"RAID calculator"},"content":{"rendered":"\n[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;||0px|||&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_blurb url=&#8221;https:\/\/raidzfscalculator.com\/&#8221; image=&#8221;https:\/\/www.raidzfscalculator.com\/en\/wp-content\/uploads\/2025\/11\/icons8-la-france-48.png&#8221; alt=&#8221;RAID ZFS CALCULATOR FIO  RESULT VIEWER&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<p style=\"text-align: center;\"><strong>Site en Fran\u00e7ais<\/strong><\/p>[\/et_pb_blurb][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_blurb url=&#8221;https:\/\/www.raidzfscalculator.com\/en\/&#8221; image=&#8221;https:\/\/www.raidzfscalculator.com\/en\/wp-content\/uploads\/2025\/11\/icons8-grande-bretagne-48.png&#8221; alt=&#8221;RAID ZFS CALCULATOR FIO RESULT VIEWER&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<p style=\"text-align: center;\"><strong>Website in english<\/strong><\/p>[\/et_pb_blurb][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; parallax__hover=&#8221;off&#8221; parallax_method__hover=&#8221;on&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_divider color=&#8221;#1ca5ff&#8221; divider_weight=&#8221;16px&#8221; _builder_version=&#8221;4.16&#8243; max_width=&#8221;48px&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_text _builder_version=&#8221;4.16&#8243; text_font=&#8221;||||||||&#8221; text_line_height=&#8221;2em&#8221; header_font=&#8221;Poppins|600|||||||&#8221; header_font_size=&#8221;50px&#8221; header_line_height=&#8221;1.3em&#8221; header_font_size_tablet=&#8221;30px&#8221; header_font_size_phone=&#8221;24px&#8221; header_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<h1>ZFS calculator<\/h1>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_code _builder_version=&#8221;4.27.7&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]        <style>\n        .raid-calc{max-width:1200px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}\n        .calc-container{background:#fff;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.1);padding:30px;margin:20px 0}\n        .calc-title{font-size:2.3rem;font-weight:700;color:#1a202c;margin-bottom:20px;text-align:center}\n        .warning{background:linear-gradient(135deg,#fff7ed 0%,#fed7aa 100%);border-left:5px solid #f97316;border-radius:8px;padding:20px;margin-bottom:30px;display:flex;align-items:flex-start;gap:15px}\n        .warning-text{font-size:14px;line-height:1.6;color:#9a3412}\n        .section{margin-bottom:40px}\n        .section h3{font-size:1.4rem;font-weight:600;color:#1e293b;margin-bottom:20px;border-bottom:2px solid #e2e8f0;padding-bottom:10px}\n        .config-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px;margin-bottom:30px}\n        .input-group{display:flex;flex-direction:column;gap:8px}\n        .input-group label{font-weight:600;color:#374151;font-size:14px}\n        .input-group input,.input-group select{padding:12px 16px;border:2px solid #d1d5db;border-radius:8px;font-size:15px;transition:all .3s ease}\n        .input-group input:focus,.input-group select:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px rgba(59,130,246,.1)}\n        .raid-btns{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}\n        .raid-btn{padding:12px 20px;border:2px solid #d1d5db;border-radius:8px;background:#fff;color:#374151;font-weight:600;cursor:pointer;transition:all .3s ease;font-size:14px}\n        .raid-btn:hover{border-color:#3b82f6;background:#eff6ff;transform:translateY(-1px)}\n        .raid-btn.active{background:linear-gradient(135deg,#3b82f6 0%,#1d4ed8 100%);border-color:#1d4ed8;color:#fff;box-shadow:0 4px 12px rgba(59,130,246,.4)}\n        .results{background:linear-gradient(135deg,#f8fafc 0%,#f1f5f9 100%);border-radius:12px;padding:30px;border:2px solid #e2e8f0}\n        .results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;margin-bottom:30px}\n        .result-item{text-align:center;background:#fff;padding:20px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.1)}\n        .result-value{font-size:1.8rem;font-weight:700;margin-bottom:8px}\n        .result-label{font-size:13px;color:#64748b;font-weight:500}\n        .usable{color:#10b981} .parity{color:#f59e0b} .waste{color:#ef4444}\n        .disk-list{margin-top:15px;max-height:200px;overflow-y:auto;border:1px solid #e2e8f0;border-radius:6px;padding:10px}\n        .disk-item{display:flex;justify-content:space-between;align-items:center;padding:8px;border-bottom:1px solid #f1f5f9}\n        .disk-item:last-child{border-bottom:none}\n        .remove-btn{background:#ef4444;color:#fff;border:none;border-radius:4px;padding:4px 8px;cursor:pointer;font-size:12px}\n        .add-btn{background:#3b82f6;color:#fff;border:none;padding:10px 16px;border-radius:6px;font-weight:600;cursor:pointer;margin-top:8px}\n        .add-btn:hover{background:#2563eb}\n        .tco-section{background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;padding:20px;margin-top:20px}\n        .tco-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px}\n        @media (max-width:768px){.config-grid{grid-template-columns:1fr}.results-grid{grid-template-columns:1fr}}\n        <\/style>\n\n        <div class=\"raid-calc\">\n            <div class=\"calc-container\">\n                <h1 class=\"calc-title\">RAID Calculator<\/h1>\n                \n                <div class=\"warning\">\n                    <div style=\"font-size:24px;flex-shrink:0\">\u2699\ufe0f<\/div>\n                    <div class=\"warning-text\">\n                        Calculate usable capacity, I\/O performance (IOPS), and total cost of ownership (TCO) for traditional hardware RAID controllers.\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>1. Disks configuration<\/h3>\n                    <div class=\"config-grid\">\n                        <div class=\"input-group\">\n                            <label>Type of Storage<\/label>\n                            <select id=\"driveType\">\n                                <option value=\"hdd\">Hard driv HDD (SATA\/SAS)<\/option>\n                                <option value=\"ssd\">SSD Enterprise \/ NVMe<\/option>\n                            <\/select>\n                        <\/div>\n                        <div class=\"input-group\">\n                            <label>Add identical disks<\/label>\n                            <div style=\"display:flex;gap:10px\">\n                                <input type=\"number\" id=\"diskCapacity\" placeholder=\"Size (TB)\" value=\"12\" min=\"0.1\" step=\"0.1\" style=\"flex:2\">\n                                <input type=\"number\" id=\"diskCount\" placeholder=\"Qty\" value=\"8\" min=\"1\" max=\"100\" style=\"flex:1\">\n                            <\/div>\n                            <button class=\"add-btn\" type=\"button\" onclick=\"addMultipleDisks()\">+ Add the discs<\/button>\n                        <\/div>\n                    <\/div>\n\n                    <div style=\"margin-top:20px\">\n                        <h4>Configured disks (<span id=\"totalDiskCount\">0<\/span> disks) :<\/h4>\n                        <div class=\"disk-list\" id=\"diskListContainer\"><\/div>\n                        <button style=\"background:#dc2626;color:#fff;border:none;padding:6px 12px;border-radius:4px;margin-top:10px;cursor:pointer;font-size:12px\" type=\"button\" onclick=\"resetConfig()\">Reset the list<\/button>\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>2. RAID Level<\/h3>\n                    <div class=\"raid-btns\">\n                        <button type=\"button\" class=\"raid-btn active\" onclick=\"setRaid('RAID 0', event)\">RAID 0<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 1', event)\">RAID 1 \/ 10<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 5', event)\">RAID 5<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 6', event)\">RAID 6<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 50', event)\">RAID 50<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 60', event)\">RAID 60<\/button>\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>3. Performance & Hardware Settings (Optional)<\/h3>\n                    <div class=\"config-grid\">\n                        <div class=\"input-group\">\n                            <label>Unit reading speed (MB\/s)<\/label>\n                            <input type=\"number\" id=\"driveReadSpeed\" value=\"220\" min=\"1\">\n                        <\/div>\n                        <div class=\"input-group\">\n                            <label>Individual write speed (MB\/s)<\/label>\n                            <input type=\"number\" id=\"driveWriteSpeed\" value=\"200\" min=\"1\">\n                        <\/div>\n                        <div class=\"input-group\">\n                            <label>IOPS per disk<\/label>\n                            <input type=\"number\" id=\"driveIOPS\" value=\"150\" min=\"1\">\n                        <\/div>\n                        <div class=\"input-group\">\n                            <label>Annual failure rate (AFR %)<\/label>\n                            <input type=\"number\" id=\"afr\" value=\"1.5\" step=\"0.1\" min=\"0\">\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>Calculation Results<\/h3>\n                    <div class=\"results\">\n                        <div class=\"results-grid\">\n                            <div class=\"result-item\">\n                                <div class=\"result-value usable\" id=\"usableSpace\">0 TB<\/div>\n                                <div class=\"result-label\">Usable Space (Net)<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value parity\" id=\"paritySpace\">0 TB<\/div>\n                                <div class=\"result-label\">Parity \/ Mirror Loss<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value waste\" id=\"wastedSpace\">0 TB<\/div>\n                                <div class=\"result-label\">Unallocated Space (Unaligned)<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"efficiency\">0%<\/div>\n                                <div class=\"result-label\">RAID Efficiency<\/div>\n                            <\/div>\n                        <\/div>\n\n                        <div class=\"results-grid\">\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"readSpeed\">0 MB\/s<\/div>\n                                <div class=\"result-label\">Max. Read Speed<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"writeSpeed\">0 MB\/s<\/div>\n                                <div class=\"result-label\">Max. Write Speed<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"readIOPS\">0<\/div>\n                                <div class=\"result-label\">Read IOPS (MB\/s)<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"writeIOPS\">0<\/div>\n                                <div class=\"result-label\">Max Write IOPS<\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>4. TCO Calculator (Total Cost of Ownership over 5 years)<\/h3>\n                    <div class=\"tco-section\">\n                        <div class=\"config-grid\">\n                            <div class=\"input-group\">\n                                <label>Unit price of the disc (\u20ac\/$)<\/label>\n                                <input type=\"number\" id=\"hddPrice\" value=\"280\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>Hardware RAID Controller Price (\u20ac\/$)<\/label>\n                                <input type=\"number\" id=\"controllerCost\" value=\"650\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>Chassis \/ Server cost (\u20ac\/$)<\/label>\n                                <input type=\"number\" id=\"enclosureCost\" value=\"1200\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>Consumption per disk (Watts)<\/label>\n                                <input type=\"number\" id=\"hddPower\" value=\"8.5\" step=\"0.1\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>kWh price (\u20ac\/$)<\/label>\n                                <input type=\"number\" id=\"electricityRate\" value=\"0.22\" step=\"0.01\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>Number of spare disks<\/label>\n                                <input type=\"number\" id=\"sparePrice\" value=\"1\" min=\"0\">\n                            <\/div>\n                        <\/div>\n\n                        <div style=\"margin-top:20px;padding:15px;background:#fff;border-radius:8px;border:1px solid #cbd5e1\">\n                            <div class=\"tco-grid\">\n                                <div><strong>Initial purchase cost :<\/strong> <span id=\"capEx\">0<\/span> \u20ac<\/div>\n                                <div><strong>Electrical (5 years) :<\/strong> <span id=\"powerCost5y\">0<\/span> \u20ac<\/div>\n                                <div><strong>Total 5-Year TCO :<\/strong> <span id=\"totalTco\" style=\"color:#2563eb;font-weight:700\">0<\/span> \u20ac<\/div>\n                                <div><strong>Cost \/ usable TB :<\/strong> <span id=\"costPerTb\">0<\/span> \u20ac\/TB<\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>\n\n        <script>\n        let selectedDisks = [];\n        let currentRaid = 'RAID 5';\n\n        function init() {\n            addDisks(12, 8); \/\/ Valeurs par d\u00e9faut\n            bindEvents();\n        }\n\n        function setRaid(raid, evt) {\n            currentRaid = raid;\n            document.querySelectorAll('.raid-btn').forEach(b => b.classList.remove('active'));\n            if(evt && evt.target) evt.target.classList.add('active');\n            calculate();\n        }\n\n        function addMultipleDisks() {\n            const cap = parseFloat(document.getElementById('diskCapacity').value);\n            const count = parseInt(document.getElementById('diskCount').value);\n            if(cap > 0 && count > 0) addDisks(cap, count);\n        }\n\n        function addDisks(cap, count) {\n            for(let i=0; i<count; i++) selectedDisks.push(cap);\n            updateDisplay();\n            calculate();\n        }\n\n        function removeDisk(idx) {\n            selectedDisks.splice(idx, 1);\n            updateDisplay();\n            calculate();\n        }\n\n        function resetConfig() {\n            selectedDisks = [];\n            updateDisplay();\n            calculate();\n        }\n\n        function updateDisplay() {\n            document.getElementById('totalDiskCount').textContent = selectedDisks.length;\n            let html = '';\n            selectedDisks.forEach((d, i) => {\n                html += `<div class=\"disk-item\"><span>Disque ${i+1}: ${d} TB<\/span><button class=\"remove-btn\" type=\"button\" onclick=\"removeDisk(${i})\">Supprimer<\/button><\/div>`;\n            });\n            document.getElementById('diskListContainer').innerHTML = html;\n        }\n\n        function calculate() {\n            const N = selectedDisks.length;\n            if(N === 0) {\n                resetResults();\n                return;\n            }\n\n            const minCap = Math.min(...selectedDisks);\n            const totalRaw = selectedDisks.reduce((a,b) => a+b, 0);\n            \n            let usable = 0;\n            let parity = 0;\n            let writePenalty = 1;\n\n            switch(currentRaid) {\n                case 'RAID 0':\n                    usable = totalRaw;\n                    parity = 0;\n                    writePenalty = 1;\n                    break;\n                case 'RAID 1':\n                    if(N >= 2) {\n                        usable = (N \/ 2) * minCap;\n                        parity = totalRaw - usable;\n                        writePenalty = 2;\n                    }\n                    break;\n                case 'RAID 5':\n                    if(N >= 3) {\n                        usable = (N - 1) * minCap;\n                        parity = minCap;\n                        writePenalty = 4;\n                    }\n                    break;\n                case 'RAID 6':\n                    if(N >= 4) {\n                        usable = (N - 2) * minCap;\n                        parity = 2 * minCap;\n                        writePenalty = 6;\n                    }\n                    break;\n                case 'RAID 50':\n                    if(N >= 6) {\n                        usable = (N - 2) * minCap;\n                        parity = 2 * minCap;\n                        writePenalty = 4;\n                    }\n                    break;\n                case 'RAID 60':\n                    if(N >= 8) {\n                        usable = (N - 4) * minCap;\n                        parity = 4 * minCap;\n                        writePenalty = 6;\n                    }\n                    break;\n            }\n\n            \/\/ Pertes syst\u00e8me & overhead contr\u00f4leur (~10%)\n            usable = usable * 0.90; \n            const wasted = Math.max(0, totalRaw - (usable \/ 0.90) - parity);\n            const eff = totalRaw > 0 ? (usable \/ totalRaw) * 100 : 0;\n\n            \/\/ Performances\n            const rSpeed = parseFloat(document.getElementById('driveReadSpeed').value) || 200;\n            const wSpeed = parseFloat(document.getElementById('driveWriteSpeed').value) || 180;\n            const iopsUnit = parseFloat(document.getElementById('driveIOPS').value) || 150;\n\n            const readSpeedMax = rSpeed * N;\n            const writeSpeedMax = (wSpeed * N) \/ writePenalty;\n            const readIopsMax = iopsUnit * N;\n            const writeIopsMax = (iopsUnit * N) \/ writePenalty;\n\n            \/\/ Mettre \u00e0 jour l'IHM\n            document.getElementById('usableSpace').textContent = usable.toFixed(2) + ' TB';\n            document.getElementById('paritySpace').textContent = parity.toFixed(2) + ' TB';\n            document.getElementById('wastedSpace').textContent = wasted.toFixed(2) + ' TB';\n            document.getElementById('efficiency').textContent = eff.toFixed(1) + '%';\n\n            document.getElementById('readSpeed').textContent = Math.round(readSpeedMax) + ' MB\/s';\n            document.getElementById('writeSpeed').textContent = Math.round(writeSpeedMax) + ' MB\/s';\n            document.getElementById('readIOPS').textContent = Math.round(readIopsMax);\n            document.getElementById('writeIOPS').textContent = Math.round(writeIopsMax);\n\n            calculateTCO(usable);\n        }\n\n        function calculateTCO(usableTB) {\n            const N = selectedDisks.length;\n            const hddPrice = parseFloat(document.getElementById('hddPrice').value) || 0;\n            const controllerCost = parseFloat(document.getElementById('controllerCost').value) || 0;\n            const enclosureCost = parseFloat(document.getElementById('enclosureCost').value) || 0;\n            const spares = parseInt(document.getElementById('sparePrice').value) || 0;\n            const watts = parseFloat(document.getElementById('hddPower').value) || 0;\n            const kwhRate = parseFloat(document.getElementById('electricityRate').value) || 0;\n\n            const totalDisksToBuy = N + spares;\n            const capEx = (totalDisksToBuy * hddPrice) + controllerCost + enclosureCost;\n            \n            \/\/ \u00c9lectricit\u00e9 sur 5 ans (24\/7)\n            const totalWatts = N * watts;\n            const kwhPerYear = (totalWatts * 24 * 365) \/ 1000;\n            const powerCost5y = kwhPerYear * 5 * kwhRate;\n\n            const totalTco = capEx + powerCost5y;\n            const costPerTb = usableTB > 0 ? (totalTco \/ usableTB) : 0;\n\n            document.getElementById('capEx').textContent = Math.round(capEx);\n            document.getElementById('powerCost5y').textContent = Math.round(powerCost5y);\n            document.getElementById('totalTco').textContent = Math.round(totalTco);\n            document.getElementById('costPerTb').textContent = costPerTb.toFixed(2);\n        }\n\n        function resetResults() {\n            ['usableSpace','paritySpace','wastedSpace'].forEach(id => document.getElementById(id).textContent = '0 TB');\n            document.getElementById('efficiency').textContent = '0%';\n        }\n\n        function bindEvents() {\n            ['driveReadSpeed','driveWriteSpeed','driveIOPS','hddPrice','controllerCost','enclosureCost','hddPower','electricityRate','sparePrice'].forEach(id => {\n                const el = document.getElementById(id);\n                if(el) el.addEventListener('input', calculate);\n            });\n        }\n\n        document.addEventListener('DOMContentLoaded', init);\n        <\/script>\n        [\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.7&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]<p>Everything You Need to Know About Hardware &amp; Traditional RAID Calculations<\/p>\n<p>Choosing the optimal storage configuration is critical for balancing data safety, disk performance, and budget. Whether you are deploying a enterprise DAS\/SAN storage array, configuring a hardware RAID controller (LSI, MegaRAID, Perc), or setting up a Linux MDADM array, our RAID Calculator predicts your exact net usable capacity after accounting for parity overhead, formatting loss, and dedicated hot spares.<\/p>\n<p>Why Use a Hardware RAID Calculator?<br \/>Traditional hardware and software RAID levels manage data redundancy across physical disk drives using striping, mirroring, and parity blocks. Understanding the key trade-offs between standard RAID levels is essential before array initialization:<\/p>\n<p>RAID 0 :Combines all drives for maximum performance and 100% capacity efficiency, but offers zero fault tolerance. A single drive failure results in total data loss.<br \/>RAID 1 (Mirroring):&lt;\/strong&gt; Duplicates data across paired drives for high fault tolerance and fast read speeds, incurring a 50% capacity loss.<br \/>RAID 5 (Single Parity): Distributes parity across all disks. Tolerates a single drive failure while balancing cost and capacity (requires a minimum of 3 drives).<\/p>\n<p>RAID 6 (Double Parity):Uses dual distributed parity blocks to survive up to two simultaneous drive failures. Essential for high-capacity SAS\/SATA HDD arrays during rebuild cycles.<br \/>RAID 10 (1+0 Striped Mirrors): Combines the performance of RAID 0 with the redundancy of RAID 1. Ideal for I\/O-intensive database servers and mission-critical enterprise environments.<\/p>\n<p>Array Performance, IOPS, and Write Penalties<br \/>Raw storage space is only half the equation. Parity-based RAID configurations introduce a write penalty (e.g., 4 I\/O operations per write on RAID 5, and 6 I\/O operations on RAID 6). Our calculator automatically estimates total read\/write throughput, array IOPS, and hardware controller overhead to help you prevent storage bottlenecks under peak workloads.<\/p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.7&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]<p>Why Use a Dedicated RAID Performance Calculator for Your Server?<\/p>\n<p>Calculating usable storage on hardware controllers isn&#8217;t as simple as multiplying disk size by drive count. Binary vs. decimal conversions (TiB vs. TB), filesystem formatting reserves, controller overhead, and hot-spare assignments directly reduce your array&#8217;s real net storage.<\/p>\n<p>Our online RAID Calculator simulates drive combinations, models controller throughput limits, and computes expected IOPS for both HDD and SSD configurations\u2014ensuring you build a cost-effective, high-reliability storage server.<\/p>\n<p>Optimize Your Server Performance with Our Free Admin Tools<\/p>\n<p>Maximizing array uptime and disk performance requires continuous benchmark analysis and rebuild risk assessment. Explore our suite of specialized utilities designed for systems engineers and hardware admins:<\/p>\n<p>&lt;a href=&#8221;https:\/\/raidzfscalculator.com\/fio-results-viewer\/&#8221; target=&#8221;_blank&#8221; rel=&#8221;noopener&#8221; title=&#8221;FIO Benchmark Log Visualizer&#8221;&gt;FIO Benchmark Visualizer&lt;\/a&gt;:&lt;\/strong&gt; Transform complex JSON output logs from &lt;code&gt;fio&lt;\/code&gt; performance benchmarks into interactive charts tracking IOPS, throughput (MB\/s), and latency under multi-threaded stress tests.<\/p>\n<p>&lt;a href=&#8221;https:\/\/raidzfscalculator.com\/rebuild-time-calculator\/&#8221; target=&#8221;_blank&#8221; rel=&#8221;noopener&#8221; title=&#8221;RAID Array Rebuild Time Estimator&#8221;&gt;RAID Rebuild Time Estimator&lt;\/a&gt;:&lt;\/strong&gt; Calculate how long your RAID controller will take to rebuild a degraded array after a drive swap, helping you evaluate secondary drive failure risks during rebuilding.<\/p>\n<p>&lt;a href=&#8221;https:\/\/raidzfscalculator.com\/bottleneck-analyzer\/&#8221; target=&#8221;_blank&#8221; rel=&#8221;noopener&#8221; title=&#8221;Hardware Bottleneck Calculator&#8221;&gt;PC &amp; Server Bottleneck Calculator&lt;\/a&gt;:&lt;\/strong&gt; Identify if your PCIe bus bandwidth, RAID controller cache, or CPU speed is bottlenecking your overall storage system throughput.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;13px|||||&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_code _builder_version=&#8221;4.27.7&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]<!DOCTYPE html><!-- [et_pb_line_break_holder] --><html lang=\"en\"><!-- [et_pb_line_break_holder] --><head><!-- [et_pb_line_break_holder] -->    <meta charset=\"UTF-8\"><!-- [et_pb_line_break_holder] -->    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"><!-- [et_pb_line_break_holder] -->    <title>Hardware RAID Capacity &#038; Performance Calculator | IOPS &#038; TCO Sizing<\/title><!-- [et_pb_line_break_holder] -->    <meta name=\"description\" content=\"Calculate net usable storage, array IOPS, write penalty, parity overhead, and 5-year TCO for hardware and software RAID (RAID 0, 1, 5, 6, 10, 50, 60).\"><!-- [et_pb_line_break_holder] -->    <style><!-- [et_pb_line_break_holder] -->        :root {<!-- [et_pb_line_break_holder] -->            --raid-bg: #f8fafc;<!-- [et_pb_line_break_holder] -->            --raid-surface: #ffffff;<!-- [et_pb_line_break_holder] -->            --raid-indigo-primary: #4f46e5;<!-- [et_pb_line_break_holder] -->            --raid-indigo-dark: #3730a3;<!-- [et_pb_line_break_holder] -->            --raid-indigo-light: #e0e7ff;<!-- [et_pb_line_break_holder] -->            --raid-indigo-border: #c7d2fe;<!-- [et_pb_line_break_holder] -->            --raid-slate-dark: #0f172a;<!-- [et_pb_line_break_holder] -->            --raid-slate-body: #334155;<!-- [et_pb_line_break_holder] -->            --raid-slate-muted: #64748b;<!-- [et_pb_line_break_holder] -->            --raid-border: #e2e8f0;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-container {<!-- [et_pb_line_break_holder] -->            max-width: 1200px;<!-- [et_pb_line_break_holder] -->            margin: 0 auto;<!-- [et_pb_line_break_holder] -->            padding: 40px 20px;<!-- [et_pb_line_break_holder] -->            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;<!-- [et_pb_line_break_holder] -->            line-height: 1.6;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-body);<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        \/* Hero Section - Light Indigo Style *\/<!-- [et_pb_line_break_holder] -->        .raid-hero {<!-- [et_pb_line_break_holder] -->            background: var(--raid-surface);<!-- [et_pb_line_break_holder] -->            border: 1px solid var(--raid-border);<!-- [et_pb_line_break_holder] -->            border-top: 6px solid var(--raid-indigo-primary);<!-- [et_pb_line_break_holder] -->            padding: 48px 40px;<!-- [et_pb_line_break_holder] -->            border-radius: 16px;<!-- [et_pb_line_break_holder] -->            margin-bottom: 40px;<!-- [et_pb_line_break_holder] -->            box-shadow: 0 10px 30px rgba(79, 70, 229, 0.05);<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-hero-title {<!-- [et_pb_line_break_holder] -->            font-size: 2.75rem;<!-- [et_pb_line_break_holder] -->            font-weight: 800;<!-- [et_pb_line_break_holder] -->            margin-bottom: 16px;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-dark);<!-- [et_pb_line_break_holder] -->            letter-spacing: -0.02em;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-hero-subtitle {<!-- [et_pb_line_break_holder] -->            font-size: 1.15rem;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-muted);<!-- [et_pb_line_break_holder] -->            margin-bottom: 30px;<!-- [et_pb_line_break_holder] -->            max-width: 880px;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-hero-badges {<!-- [et_pb_line_break_holder] -->            display: flex;<!-- [et_pb_line_break_holder] -->            gap: 12px;<!-- [et_pb_line_break_holder] -->            flex-wrap: wrap;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-badge {<!-- [et_pb_line_break_holder] -->            display: inline-flex;<!-- [et_pb_line_break_holder] -->            align-items: center;<!-- [et_pb_line_break_holder] -->            gap: 6px;<!-- [et_pb_line_break_holder] -->            background: var(--raid-indigo-light);<!-- [et_pb_line_break_holder] -->            border: 1px solid var(--raid-indigo-border);<!-- [et_pb_line_break_holder] -->            color: var(--raid-indigo-dark);<!-- [et_pb_line_break_holder] -->            padding: 8px 16px;<!-- [et_pb_line_break_holder] -->            border-radius: 30px;<!-- [et_pb_line_break_holder] -->            font-size: 0.88rem;<!-- [et_pb_line_break_holder] -->            font-weight: 600;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        \/* Modern Grid Layout *\/<!-- [et_pb_line_break_holder] -->        .raid-grid-3col {<!-- [et_pb_line_break_holder] -->            display: grid;<!-- [et_pb_line_break_holder] -->            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));<!-- [et_pb_line_break_holder] -->            gap: 24px;<!-- [et_pb_line_break_holder] -->            margin-bottom: 40px;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-card {<!-- [et_pb_line_break_holder] -->            background: var(--raid-surface);<!-- [et_pb_line_break_holder] -->            border-radius: 14px;<!-- [et_pb_line_break_holder] -->            padding: 32px;<!-- [et_pb_line_break_holder] -->            border: 1px solid var(--raid-border);<!-- [et_pb_line_break_holder] -->            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);<!-- [et_pb_line_break_holder] -->            transition: all 0.25s ease;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-card:hover {<!-- [et_pb_line_break_holder] -->            border-color: var(--raid-indigo-primary);<!-- [et_pb_line_break_holder] -->            transform: translateY(-3px);<!-- [et_pb_line_break_holder] -->            box-shadow: 0 12px 24px rgba(79, 70, 229, 0.08);<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-card-icon {<!-- [et_pb_line_break_holder] -->            font-size: 2.2rem;<!-- [et_pb_line_break_holder] -->            margin-bottom: 16px;<!-- [et_pb_line_break_holder] -->            display: inline-block;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-card-title {<!-- [et_pb_line_break_holder] -->            font-size: 1.35rem;<!-- [et_pb_line_break_holder] -->            font-weight: 700;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-dark);<!-- [et_pb_line_break_holder] -->            margin-bottom: 12px;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-card-text {<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-muted);<!-- [et_pb_line_break_holder] -->            font-size: 0.95rem;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-section-title {<!-- [et_pb_line_break_holder] -->            font-size: 1.85rem;<!-- [et_pb_line_break_holder] -->            font-weight: 700;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-dark);<!-- [et_pb_line_break_holder] -->            margin-bottom: 24px;<!-- [et_pb_line_break_holder] -->            text-align: left;<!-- [et_pb_line_break_holder] -->            position: relative;<!-- [et_pb_line_break_holder] -->            padding-bottom: 10px;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-section-title::after {<!-- [et_pb_line_break_holder] -->            content: '';<!-- [et_pb_line_break_holder] -->            position: absolute;<!-- [et_pb_line_break_holder] -->            bottom: 0;<!-- [et_pb_line_break_holder] -->            left: 0;<!-- [et_pb_line_break_holder] -->            width: 60px;<!-- [et_pb_line_break_holder] -->            height: 4px;<!-- [et_pb_line_break_holder] -->            background: var(--raid-indigo-primary);<!-- [et_pb_line_break_holder] -->            border-radius: 2px;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        \/* Stats Section - Clean Light Banner *\/<!-- [et_pb_line_break_holder] -->        .raid-stats-banner {<!-- [et_pb_line_break_holder] -->            background: var(--raid-surface);<!-- [et_pb_line_break_holder] -->            border: 1px solid var(--raid-border);<!-- [et_pb_line_break_holder] -->            border-radius: 16px;<!-- [et_pb_line_break_holder] -->            padding: 36px 40px;<!-- [et_pb_line_break_holder] -->            margin: 40px 0;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-stats-grid {<!-- [et_pb_line_break_holder] -->            display: grid;<!-- [et_pb_line_break_holder] -->            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));<!-- [et_pb_line_break_holder] -->            gap: 30px;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-stat-item {<!-- [et_pb_line_break_holder] -->            text-align: left;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-stat-number {<!-- [et_pb_line_break_holder] -->            font-size: 2.6rem;<!-- [et_pb_line_break_holder] -->            font-weight: 800;<!-- [et_pb_line_break_holder] -->            color: var(--raid-indigo-primary);<!-- [et_pb_line_break_holder] -->            display: block;<!-- [et_pb_line_break_holder] -->            line-height: 1.1;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-stat-label {<!-- [et_pb_line_break_holder] -->            font-size: 0.95rem;<!-- [et_pb_line_break_holder] -->            font-weight: 600;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-dark);<!-- [et_pb_line_break_holder] -->            margin-top: 6px;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-stat-sub {<!-- [et_pb_line_break_holder] -->            font-size: 0.85rem;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-muted);<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        \/* Features List Grid *\/<!-- [et_pb_line_break_holder] -->        .raid-features-grid {<!-- [et_pb_line_break_holder] -->            display: grid;<!-- [et_pb_line_break_holder] -->            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));<!-- [et_pb_line_break_holder] -->            gap: 20px;<!-- [et_pb_line_break_holder] -->            margin: 30px 0;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-feature-item {<!-- [et_pb_line_break_holder] -->            background: var(--raid-surface);<!-- [et_pb_line_break_holder] -->            border: 1px solid var(--raid-border);<!-- [et_pb_line_break_holder] -->            padding: 24px;<!-- [et_pb_line_break_holder] -->            border-radius: 12px;<!-- [et_pb_line_break_holder] -->            border-left: 4px solid var(--raid-indigo-primary);<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-feature-item h4 {<!-- [et_pb_line_break_holder] -->            font-size: 1.1rem;<!-- [et_pb_line_break_holder] -->            font-weight: 700;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-dark);<!-- [et_pb_line_break_holder] -->            margin: 0 0 8px 0;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-feature-item p {<!-- [et_pb_line_break_holder] -->            font-size: 0.92rem;<!-- [et_pb_line_break_holder] -->            color: var(--raid-slate-muted);<!-- [et_pb_line_break_holder] -->            margin: 0;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        \/* Warning Box *\/<!-- [et_pb_line_break_holder] -->        .raid-warning-box {<!-- [et_pb_line_break_holder] -->            background: #fffbeeb0;<!-- [et_pb_line_break_holder] -->            border: 1px solid #fde68a;<!-- [et_pb_line_break_holder] -->            border-left: 5px solid #d97706;<!-- [et_pb_line_break_holder] -->            padding: 28px;<!-- [et_pb_line_break_holder] -->            border-radius: 12px;<!-- [et_pb_line_break_holder] -->            margin: 40px 0;<!-- [et_pb_line_break_holder] -->            color: #78350f;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-warning-title {<!-- [et_pb_line_break_holder] -->            font-size: 1.15rem;<!-- [et_pb_line_break_holder] -->            font-weight: 700;<!-- [et_pb_line_break_holder] -->            margin-bottom: 12px;<!-- [et_pb_line_break_holder] -->            display: flex;<!-- [et_pb_line_break_holder] -->            align-items: center;<!-- [et_pb_line_break_holder] -->            gap: 10px;<!-- [et_pb_line_break_holder] -->            color: #92400e;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-warning-text p {<!-- [et_pb_line_break_holder] -->            margin: 0 0 12px 0;<!-- [et_pb_line_break_holder] -->            font-size: 0.95rem;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-warning-list {<!-- [et_pb_line_break_holder] -->            margin: 10px 0;<!-- [et_pb_line_break_holder] -->            padding-left: 20px;<!-- [et_pb_line_break_holder] -->            font-size: 0.92rem;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        .raid-warning-list li {<!-- [et_pb_line_break_holder] -->            margin-bottom: 6px;<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        @media (max-width: 768px) {<!-- [et_pb_line_break_holder] -->            .raid-hero { padding: 30px 20px; }<!-- [et_pb_line_break_holder] -->            .raid-hero-title { font-size: 2.1rem; }<!-- [et_pb_line_break_holder] -->            .raid-stats-grid { grid-template-columns: repeat(2, 1fr); }<!-- [et_pb_line_break_holder] -->        }<!-- [et_pb_line_break_holder] -->    <\/style><!-- [et_pb_line_break_holder] --><\/head><!-- [et_pb_line_break_holder] --><body><!-- [et_pb_line_break_holder] -->    <div class=\"raid-container\"><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <header class=\"raid-hero\"><!-- [et_pb_line_break_holder] -->            <h1 class=\"raid-hero-title\">Hardware &#038; Enterprise RAID Calculator<\/h1><!-- [et_pb_line_break_holder] -->            <pee class=\"raid-hero-subtitle\"><!-- [et_pb_line_break_holder] -->                Accurately size hardware RAID controllers, Linux MDADM arrays, and NAS enclosures. Model net formatted capacity, write penalties, array IOPS, hot spare configurations, and 5-year Total Cost of Ownership (TCO).<!-- [et_pb_line_break_holder] -->            <\/pee><!-- [et_pb_line_break_holder] -->            <div class=\"raid-hero-badges\"><!-- [et_pb_line_break_holder] -->                <span class=\"raid-badge\">\ud83d\udec8 RAID 0 \/ 1 \/ 5 \/ 6 \/ 10 \/ 50 \/ 60<\/span><!-- [et_pb_line_break_holder] -->                <span class=\"raid-badge\">\u26a1 Real-Time IOPS &#038; Write Penalty Sizing<\/span><!-- [et_pb_line_break_holder] -->                <span class=\"raid-badge\">\ud83d\udcb0 5-Year Hardware TCO Analysis<\/span><!-- [et_pb_line_break_holder] -->                <span class=\"raid-badge\">\ud83d\udee1\ufe0f Hot Spare &#038; Parity Overhead<\/span><!-- [et_pb_line_break_holder] -->            <\/div><!-- [et_pb_line_break_holder] -->        <\/header><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <section style=\"margin-bottom: 50px;\"><!-- [et_pb_line_break_holder] -->            <h2 class=\"raid-section-title\">Why Use Our Hardware RAID Calculator?<\/h2><!-- [et_pb_line_break_holder] -->            <div class=\"raid-grid-3col\"><!-- [et_pb_line_break_holder] -->                <div class=\"raid-card\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-card-icon\"><\/span><!-- [et_pb_line_break_holder] -->                    <h3 class=\"raid-card-title\">Enterprise Controller Precision<\/h3><!-- [et_pb_line_break_holder] -->                    <pee class=\"raid-card-text\"><!-- [et_pb_line_break_holder] -->                        Standard drive capacities do not translate 1:1 into usable storage. Our calculator factors in hardware controller overhead, binary-to-decimal conversion (TB to TiB), parity calculations, and filesystem formatting reserves.<!-- [et_pb_line_break_holder] -->                    <\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->                <div class=\"raid-card\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-card-icon\"><\/span><!-- [et_pb_line_break_holder] -->                    <h3 class=\"raid-card-title\">IOPS &#038; Write Penalty Modeling<\/h3><!-- [et_pb_line_break_holder] -->                    <pee class=\"raid-card-text\"><!-- [et_pb_line_break_holder] -->                        Parity-based arrays (RAID 5 &#038; RAID 6) create significant write penalties (4x and 6x I\/O operations per write). Predict actual random workload throughput before deploying storage nodes.<!-- [et_pb_line_break_holder] -->                    <\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->                <div class=\"raid-card\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-card-icon\"><\/span><!-- [et_pb_line_break_holder] -->                    <h3 class=\"raid-card-title\">5-Year TCO &#038; Energy Sizing<\/h3><!-- [et_pb_line_break_holder] -->                    <pee class=\"raid-card-text\"><!-- [et_pb_line_break_holder] -->                        Estimate long-term storage investment. Compute initial disk and controller acquisition costs alongside active operational costs like power consumption (Watts), cooling, and spare replacement.<!-- [et_pb_line_break_holder] -->                    <\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] -->            <\/div><!-- [et_pb_line_break_holder] -->        <\/section><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <section class=\"raid-stats-banner\"><!-- [et_pb_line_break_holder] -->            <div class=\"raid-stats-grid\"><!-- [et_pb_line_break_holder] -->                <div class=\"raid-stat-item\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-number\">84<\/span><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-label\">Maximum Drive Bay Count<\/span><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-sub\">Supports large JBOD &#038; SAN arrays<\/span><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] -->                <div class=\"raid-stat-item\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-number\">8<\/span><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-label\">Standard RAID Architectures<\/span><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-sub\">RAID 0, 1, 5, 6, 10, 50, 60 &#038; RAID 1E<\/span><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] -->                <div class=\"raid-stat-item\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-number\">5 Years<\/span><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-label\">TCO &#038; Energy Projection<\/span><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-sub\">CAPEX &#038; OPEX lifecycle modeling<\/span><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] -->                <div class=\"raid-stat-item\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-number\">100%<\/span><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-label\">Free &#038; Independent Tool<\/span><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-stat-sub\">No vendor bias or restrictions<\/span><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] -->            <\/div><!-- [et_pb_line_break_holder] -->        <\/section><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <section style=\"margin-bottom: 50px;\"><!-- [et_pb_line_break_holder] -->            <h2 class=\"raid-section-title\">Engineered for System Admins &#038; Integrators<\/h2><!-- [et_pb_line_break_holder] -->            <div class=\"raid-features-grid\"><!-- [et_pb_line_break_holder] -->                <!-- [et_pb_line_break_holder] -->                <div class=\"raid-feature-item\"><!-- [et_pb_line_break_holder] -->                    <h4>Flexible Array Topologies<\/h4><!-- [et_pb_line_break_holder] -->                    <pee>Configure drive groups, dedicated global hot spares, and custom read\/write ratios tailored to your specific application requirements.<\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->                <div class=\"raid-feature-item\"><!-- [et_pb_line_break_holder] -->                    <h4>Multi-Drive Mix &#038; Sizing<\/h4><!-- [et_pb_line_break_holder] -->                    <pee>Simulate drive capacity boundaries across enterprise SAS HDDs, NVMe SSDs, and SATA drives to avoid mismatched capacity waste.<\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->                <div class=\"raid-feature-item\"><!-- [et_pb_line_break_holder] -->                    <h4>Automated Validation Checks<\/h4><!-- [et_pb_line_break_holder] -->                    <pee>Built-in logic prevents impossible configurations (such as RAID 5 with less than 3 drives or RAID 6 with less than 4 drives).<\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->                <div class=\"raid-feature-item\"><!-- [et_pb_line_break_holder] -->                    <h4>Mobile-Friendly Interface<\/h4><!-- [et_pb_line_break_holder] -->                    <pee>Designed for quick on-site calculations on smartphones, tablets, or desktop web browsers without plug-ins or logins.<\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->                <div class=\"raid-feature-item\"><!-- [et_pb_line_break_holder] -->                    <h4>Instant Benchmark Estimation<\/h4><!-- [et_pb_line_break_holder] -->                    <pee>View real-time estimates for total array read\/write throughput (MB\/s) and random read\/write IOPS directly during editing.<\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->                <div class=\"raid-feature-item\"><!-- [et_pb_line_break_holder] -->                    <h4>Enterprise Workload Profiles<\/h4><!-- [et_pb_line_break_holder] -->                    <pee>Presets optimized for virtualized environments, transactional SQL databases, CCTV video surveillance, and cold backup archives.<\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->            <\/div><!-- [et_pb_line_break_holder] -->        <\/section><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <div class=\"raid-warning-box\"><!-- [et_pb_line_break_holder] -->            <div class=\"raid-warning-title\"><!-- [et_pb_line_break_holder] -->                <span>\u26a0\ufe0f<\/span><!-- [et_pb_line_break_holder] -->                <span>Important Storage Sizing Notice<\/span><!-- [et_pb_line_break_holder] -->            <\/div><!-- [et_pb_line_break_holder] -->            <div class=\"raid-warning-text\"><!-- [et_pb_line_break_holder] -->                <pee><strong>This calculator provides conservative estimates<\/strong> based on standard storage mathematics and typical hardware controller behavior. Actual operational throughput and storage utilization may vary depending on:<\/pee><!-- [et_pb_line_break_holder] -->                <ul class=\"raid-warning-list\"><!-- [et_pb_line_break_holder] -->                    <li>RAID Controller Cache size, Battery Backed Write Cache (FBWC), and queue depth.<\/li><!-- [et_pb_line_break_holder] -->                    <li>Hardware vs. Software RAID implementation (e.g., LSI MegaRAID vs. Linux MDADM).<\/li><!-- [et_pb_line_break_holder] -->                    <li>System bus interface limits (PCIe bus generation and lane count).<\/li><!-- [et_pb_line_break_holder] -->                    <li>Filesystem overhead (NTFS, EXT4, XFS sector alignment and metadata allocation).<\/li><!-- [et_pb_line_break_holder] -->                    <li>Workload profile (sequential vs. small block 4K random I\/O).<\/li><!-- [et_pb_line_break_holder] -->                <\/ul><!-- [et_pb_line_break_holder] -->                <pee style=\"margin: 0;\"><strong>Recommendation:<\/strong> Use these calculated metrics as a baseline for hardware procurement, then validate performance under real workloads using tools like <code>fio<\/code> or <code>Iometer<\/code>.<\/pee><!-- [et_pb_line_break_holder] -->            <\/div><!-- [et_pb_line_break_holder] -->        <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <section style=\"margin-top: 40px;\"><!-- [et_pb_line_break_holder] -->            <h2 class=\"raid-section-title\">Typical Use Cases<\/h2><!-- [et_pb_line_break_holder] -->            <div class=\"raid-grid-3col\"><!-- [et_pb_line_break_holder] -->                <div class=\"raid-card\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-card-icon\"><\/span><!-- [et_pb_line_break_holder] -->                    <h3 class=\"raid-card-title\">IT Infrastructure Integrators<\/h3><!-- [et_pb_line_break_holder] -->                    <pee class=\"raid-card-text\"><!-- [et_pb_line_break_holder] -->                        Rapidly design storage proposals for clients. Present clear, line-by-line total cost of ownership estimates and technical justifications for hardware RAID level choices.<!-- [et_pb_line_break_holder] -->                    <\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->                <div class=\"raid-card\"><!-- [et_pb_line_break_holder] -->                    <span class=\"raid-card-icon\"><\/span><!-- [et_pb_line_break_holder] -->                    <h3 class=\"raid-card-title\">Storage &#038; Systems Consultants<\/h3><!-- [et_pb_line_break_holder] -->                    <pee class=\"raid-card-text\"><!-- [et_pb_line_break_holder] -->                        Evaluate capacity trade-offs, drive failure fault tolerance, and IOPS overhead when auditing existing SAN\/DAS setups or planning server migrations.<!-- [et_pb_line_break_holder] -->                    <\/pee><!-- [et_pb_line_break_holder] -->                <\/div><!-- [et_pb_line_break_holder] -->            <\/div><!-- [et_pb_line_break_holder] -->        <\/section><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/div><!-- [et_pb_line_break_holder] --><\/body><!-- [et_pb_line_break_holder] --><\/html>[\/et_pb_code][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_code _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<script type=\"application\/ld+json\"><!-- [et_pb_line_break_holder] -->{<!-- [et_pb_line_break_holder] -->  \"@context\": \"https:\/\/schema.org\",<!-- [et_pb_line_break_holder] -->  \"@type\": \"FAQPage\",<!-- [et_pb_line_break_holder] -->  \"mainEntity\": [<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\": \"Question\",<!-- [et_pb_line_break_holder] -->      \"name\": \"How much usable space do I get with RAIDZ2?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\": {<!-- [et_pb_line_break_holder] -->        \"@type\": \"Answer\",<!-- [et_pb_line_break_holder] -->        \"text\": \"RAIDZ2 requires at least 4 disks and uses 2 of them for parity. Your usable space is calculated as (N-2) times the smallest disk capacity. Our calculator also subtracts the ZFS overhead for more accuracy.\"<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    },<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\": \"Question\",<!-- [et_pb_line_break_holder] -->      \"name\": \"Is RAIDZ1 safe for large hard drives?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\": {<!-- [et_pb_line_break_holder] -->        \"@type\": \"Answer\",<!-- [et_pb_line_break_holder] -->        \"text\": \"For modern high-capacity drives (8TB+), RAIDZ2 is highly recommended. The resilver time for large drives is long, and a second failure during this process would result in total data loss in RAIDZ1.\"<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    },<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\": \"Question\",<!-- [et_pb_line_break_holder] -->      \"name\": \"What is the ZFS SLOP space reservation?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\": {<!-- [et_pb_line_break_holder] -->        \"@type\": \"Answer\",<!-- [et_pb_line_break_holder] -->        \"text\": \"ZFS reserves about 3.2% (1\/32) of the pool capacity as SLOP space. This prevents the file system from becoming completely locked or slow when it reaches near-full capacity.\"<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    },<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\": \"Question\",<!-- [et_pb_line_break_holder] -->      \"name\": \"Does this calculator work for TrueNAS and Unraid?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\": {<!-- [et_pb_line_break_holder] -->        \"@type\": \"Answer\",<!-- [et_pb_line_break_holder] -->        \"text\": \"Yes! While Unraid uses a different parity system for its main array, it supports ZFS pools. TrueNAS is built entirely on ZFS. Our tool provides accurate estimations for both.\"<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    },<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\": \"Question\",<!-- [et_pb_line_break_holder] -->      \"name\": \"What are IOPS in a RAID configuration?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\": {<!-- [et_pb_line_break_holder] -->        \"@type\": \"Answer\",<!-- [et_pb_line_break_holder] -->        \"text\": \"IOPS represent the speed of your array. In RAIDZ, write IOPS are generally limited to the speed of a single drive in the VDEV, while read IOPS scale with the number of data drives.\"<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] -->  ]<!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] --><\/script>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"excerpt":{"rendered":"<p>Site en Fran\u00e7aisWebsite in englishZFS calculator        <style>\n        .raid-calc{max-width:1200px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}\n        .calc-container{background:#fff;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.1);padding:30px;margin:20px 0}\n        .calc-title{font-size:2.3rem;font-weight:700;color:#1a202c;margin-bottom:20px;text-align:center}\n        .warning{background:linear-gradient(135deg,#fff7ed 0%,#fed7aa 100%);border-left:5px solid #f97316;border-radius:8px;padding:20px;margin-bottom:30px;display:flex;align-items:flex-start;gap:15px}\n        .warning-text{font-size:14px;line-height:1.6;color:#9a3412}\n        .section{margin-bottom:40px}\n        .section h3{font-size:1.4rem;font-weight:600;color:#1e293b;margin-bottom:20px;border-bottom:2px solid #e2e8f0;padding-bottom:10px}\n        .config-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px;margin-bottom:30px}\n        .input-group{display:flex;flex-direction:column;gap:8px}\n        .input-group label{font-weight:600;color:#374151;font-size:14px}\n        .input-group input,.input-group select{padding:12px 16px;border:2px solid #d1d5db;border-radius:8px;font-size:15px;transition:all .3s ease}\n        .input-group input:focus,.input-group select:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px rgba(59,130,246,.1)}\n        .raid-btns{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}\n        .raid-btn{padding:12px 20px;border:2px solid #d1d5db;border-radius:8px;background:#fff;color:#374151;font-weight:600;cursor:pointer;transition:all .3s ease;font-size:14px}\n        .raid-btn:hover{border-color:#3b82f6;background:#eff6ff;transform:translateY(-1px)}\n        .raid-btn.active{background:linear-gradient(135deg,#3b82f6 0%,#1d4ed8 100%);border-color:#1d4ed8;color:#fff;box-shadow:0 4px 12px rgba(59,130,246,.4)}\n        .results{background:linear-gradient(135deg,#f8fafc 0%,#f1f5f9 100%);border-radius:12px;padding:30px;border:2px solid #e2e8f0}\n        .results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;margin-bottom:30px}\n        .result-item{text-align:center;background:#fff;padding:20px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.1)}\n        .result-value{font-size:1.8rem;font-weight:700;margin-bottom:8px}\n        .result-label{font-size:13px;color:#64748b;font-weight:500}\n        .usable{color:#10b981} .parity{color:#f59e0b} .waste{color:#ef4444}\n        .disk-list{margin-top:15px;max-height:200px;overflow-y:auto;border:1px solid #e2e8f0;border-radius:6px;padding:10px}\n        .disk-item{display:flex;justify-content:space-between;align-items:center;padding:8px;border-bottom:1px solid #f1f5f9}\n        .disk-item:last-child{border-bottom:none}\n        .remove-btn{background:#ef4444;color:#fff;border:none;border-radius:4px;padding:4px 8px;cursor:pointer;font-size:12px}\n        .add-btn{background:#3b82f6;color:#fff;border:none;padding:10px 16px;border-radius:6px;font-weight:600;cursor:pointer;margin-top:8px}\n        .add-btn:hover{background:#2563eb}\n        .tco-section{background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;padding:20px;margin-top:20px}\n        .tco-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px}\n        @media (max-width:768px){.config-grid{grid-template-columns:1fr}.results-grid{grid-template-columns:1fr}}\n        <\/style>\n\n        <div class=\"raid-calc\">\n            <div class=\"calc-container\">\n                <h1 class=\"calc-title\">RAID Calculator<\/h1>\n                \n                <div class=\"warning\">\n                    <div style=\"font-size:24px;flex-shrink:0\">\u2699\ufe0f<\/div>\n                    <div class=\"warning-text\">\n                        Calculate usable capacity, I\/O performance (IOPS), and total cost of ownership (TCO) for traditional hardware RAID controllers.\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>1. Disks configuration<\/h3>\n                    <div class=\"config-grid\">\n                        <div class=\"input-group\">\n                            <label>Type of Storage<\/label>\n                            <select id=\"driveType\">\n                                <option value=\"hdd\">Hard driv HDD (SATA\/SAS)<\/option>\n                                <option value=\"ssd\">SSD Enterprise \/ NVMe<\/option>\n                            <\/select>\n                        <\/div>\n                        <div class=\"input-group\">\n                            <label>Add identical disks<\/label>\n                            <div style=\"display:flex;gap:10px\">\n                                <input type=\"number\" id=\"diskCapacity\" placeholder=\"Size (TB)\" value=\"12\" min=\"0.1\" step=\"0.1\" style=\"flex:2\">\n                                <input type=\"number\" id=\"diskCount\" placeholder=\"Qty\" value=\"8\" min=\"1\" max=\"100\" style=\"flex:1\">\n                            <\/div>\n                            <button class=\"add-btn\" type=\"button\" onclick=\"addMultipleDisks()\">+ Add the discs<\/button>\n                        <\/div>\n                    <\/div>\n\n                    <div style=\"margin-top:20px\">\n                        <h4>Configured disks (<span id=\"totalDiskCount\">0<\/span> disks) :<\/h4>\n                        <div class=\"disk-list\" id=\"diskListContainer\"><\/div>\n                        <button style=\"background:#dc2626;color:#fff;border:none;padding:6px 12px;border-radius:4px;margin-top:10px;cursor:pointer;font-size:12px\" type=\"button\" onclick=\"resetConfig()\">Reset the list<\/button>\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>2. RAID Level<\/h3>\n                    <div class=\"raid-btns\">\n                        <button type=\"button\" class=\"raid-btn active\" onclick=\"setRaid('RAID 0', event)\">RAID 0<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 1', event)\">RAID 1 \/ 10<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 5', event)\">RAID 5<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 6', event)\">RAID 6<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 50', event)\">RAID 50<\/button>\n                        <button type=\"button\" class=\"raid-btn\" onclick=\"setRaid('RAID 60', event)\">RAID 60<\/button>\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>3. Performance & Hardware Settings (Optional)<\/h3>\n                    <div class=\"config-grid\">\n                        <div class=\"input-group\">\n                            <label>Unit reading speed (MB\/s)<\/label>\n                            <input type=\"number\" id=\"driveReadSpeed\" value=\"220\" min=\"1\">\n                        <\/div>\n                        <div class=\"input-group\">\n                            <label>Individual write speed (MB\/s)<\/label>\n                            <input type=\"number\" id=\"driveWriteSpeed\" value=\"200\" min=\"1\">\n                        <\/div>\n                        <div class=\"input-group\">\n                            <label>IOPS per disk<\/label>\n                            <input type=\"number\" id=\"driveIOPS\" value=\"150\" min=\"1\">\n                        <\/div>\n                        <div class=\"input-group\">\n                            <label>Annual failure rate (AFR %)<\/label>\n                            <input type=\"number\" id=\"afr\" value=\"1.5\" step=\"0.1\" min=\"0\">\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>Calculation Results<\/h3>\n                    <div class=\"results\">\n                        <div class=\"results-grid\">\n                            <div class=\"result-item\">\n                                <div class=\"result-value usable\" id=\"usableSpace\">0 TB<\/div>\n                                <div class=\"result-label\">Usable Space (Net)<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value parity\" id=\"paritySpace\">0 TB<\/div>\n                                <div class=\"result-label\">Parity \/ Mirror Loss<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value waste\" id=\"wastedSpace\">0 TB<\/div>\n                                <div class=\"result-label\">Unallocated Space (Unaligned)<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"efficiency\">0%<\/div>\n                                <div class=\"result-label\">RAID Efficiency<\/div>\n                            <\/div>\n                        <\/div>\n\n                        <div class=\"results-grid\">\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"readSpeed\">0 MB\/s<\/div>\n                                <div class=\"result-label\">Max. Read Speed<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"writeSpeed\">0 MB\/s<\/div>\n                                <div class=\"result-label\">Max. Write Speed<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"readIOPS\">0<\/div>\n                                <div class=\"result-label\">Read IOPS (MB\/s)<\/div>\n                            <\/div>\n                            <div class=\"result-item\">\n                                <div class=\"result-value\" id=\"writeIOPS\">0<\/div>\n                                <div class=\"result-label\">Max Write IOPS<\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <div class=\"section\">\n                    <h3>4. TCO Calculator (Total Cost of Ownership over 5 years)<\/h3>\n                    <div class=\"tco-section\">\n                        <div class=\"config-grid\">\n                            <div class=\"input-group\">\n                                <label>Unit price of the disc (\u20ac\/$)<\/label>\n                                <input type=\"number\" id=\"hddPrice\" value=\"280\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>Hardware RAID Controller Price (\u20ac\/$)<\/label>\n                                <input type=\"number\" id=\"controllerCost\" value=\"650\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>Chassis \/ Server cost (\u20ac\/$)<\/label>\n                                <input type=\"number\" id=\"enclosureCost\" value=\"1200\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>Consumption per disk (Watts)<\/label>\n                                <input type=\"number\" id=\"hddPower\" value=\"8.5\" step=\"0.1\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>kWh price (\u20ac\/$)<\/label>\n                                <input type=\"number\" id=\"electricityRate\" value=\"0.22\" step=\"0.01\" min=\"0\">\n                            <\/div>\n                            <div class=\"input-group\">\n                                <label>Number of spare disks<\/label>\n                                <input type=\"number\" id=\"sparePrice\" value=\"1\" min=\"0\">\n                            <\/div>\n                        <\/div>\n\n                        <div style=\"margin-top:20px;padding:15px;background:#fff;border-radius:8px;border:1px solid #cbd5e1\">\n                            <div class=\"tco-grid\">\n                                <div><strong>Initial purchase cost :<\/strong> <span id=\"capEx\">0<\/span> \u20ac<\/div>\n                                <div><strong>Electrical (5 years) :<\/strong> <span id=\"powerCost5y\">0<\/span> \u20ac<\/div>\n                                <div><strong>Total 5-Year TCO :<\/strong> <span id=\"totalTco\" style=\"color:#2563eb;font-weight:700\">0<\/span> \u20ac<\/div>\n                                <div><strong>Cost \/ usable TB :<\/strong> <span id=\"costPerTb\">0<\/span> \u20ac\/TB<\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>\n\n        <script>\n        let selectedDisks = [];\n        let currentRaid = 'RAID 5';\n\n        function init() {\n            addDisks(12, 8); \/\/ Valeurs par d\u00e9faut\n            bindEvents();\n        }\n\n        function setRaid(raid, evt) {\n            currentRaid = raid;\n            document.querySelectorAll('.raid-btn').forEach(b => b.classList.remove('active'));\n            if(evt && evt.target) evt.target.classList.add('active');\n            calculate();\n        }\n\n        function addMultipleDisks() {\n            const cap = parseFloat(document.getElementById('diskCapacity').value);\n            const count = parseInt(document.getElementById('diskCount').value);\n            if(cap > 0 && count > 0) addDisks(cap, count);\n        }\n\n        function addDisks(cap, count) {\n            for(let i=0; i<count; i++) selectedDisks.push(cap);\n            updateDisplay();\n            calculate();\n        }\n\n        function removeDisk(idx) {\n            selectedDisks.splice(idx, 1);\n            updateDisplay();\n            calculate();\n        }\n\n        function resetConfig() {\n            selectedDisks = [];\n            updateDisplay();\n            calculate();\n        }\n\n        function updateDisplay() {\n            document.getElementById('totalDiskCount').textContent = selectedDisks.length;\n            let html = '';\n            selectedDisks.forEach((d, i) => {\n                html += `<div class=\"disk-item\"><span>Disque ${i+1}: ${d} TB<\/span><button class=\"remove-btn\" type=\"button\" onclick=\"removeDisk(${i})\">Supprimer<\/button><\/div>`;\n            });\n            document.getElementById('diskListContainer').innerHTML = html;\n        }\n\n        function calculate() {\n            const N = selectedDisks.length;\n            if(N === 0) {\n                resetResults();\n                return;\n            }\n\n            const minCap = Math.min(...selectedDisks);\n            const totalRaw = selectedDisks.reduce((a,b) => a+b, 0);\n            \n            let usable = 0;\n            let parity = 0;\n            let writePenalty = 1;\n\n            switch(currentRaid) {\n                case 'RAID 0':\n                    usable = totalRaw;\n                    parity = 0;\n                    writePenalty = 1;\n                    break;\n                case 'RAID 1':\n                    if(N >= 2) {\n                        usable = (N \/ 2) * minCap;\n                        parity = totalRaw - usable;\n                        writePenalty = 2;\n                    }\n                    break;\n                case 'RAID 5':\n                    if(N >= 3) {\n                        usable = (N - 1) * minCap;\n                        parity = minCap;\n                        writePenalty = 4;\n                    }\n                    break;\n                case 'RAID 6':\n                    if(N >= 4) {\n                        usable = (N - 2) * minCap;\n                        parity = 2 * minCap;\n                        writePenalty = 6;\n                    }\n                    break;\n                case 'RAID 50':\n                    if(N >= 6) {\n                        usable = (N - 2) * minCap;\n                        parity = 2 * minCap;\n                        writePenalty = 4;\n                    }\n                    break;\n                case 'RAID 60':\n                    if(N >= 8) {\n                        usable = (N - 4) * minCap;\n                        parity = 4 * minCap;\n                        writePenalty = 6;\n                    }\n                    break;\n            }\n\n            \/\/ Pertes syst\u00e8me & overhead contr\u00f4leur (~10%)\n            usable = usable * 0.90; \n            const wasted = Math.max(0, totalRaw - (usable \/ 0.90) - parity);\n            const eff = totalRaw > 0 ? (usable \/ totalRaw) * 100 : 0;\n\n            \/\/ Performances\n            const rSpeed = parseFloat(document.getElementById('driveReadSpeed').value) || 200;\n            const wSpeed = parseFloat(document.getElementById('driveWriteSpeed').value) || 180;\n            const iopsUnit = parseFloat(document.getElementById('driveIOPS').value) || 150;\n\n            const readSpeedMax = rSpeed * N;\n            const writeSpeedMax = (wSpeed * N) \/ writePenalty;\n            const readIopsMax = iopsUnit * N;\n            const writeIopsMax = (iopsUnit * N) \/ writePenalty;\n\n            \/\/ Mettre \u00e0 jour l'IHM\n            document.getElementById('usableSpace').textContent = usable.toFixed(2) + ' TB';\n            document.getElementById('paritySpace').textContent = parity.toFixed(2) + ' TB';\n            document.getElementById('wastedSpace').textContent = wasted.toFixed(2) + ' TB';\n            document.getElementById('efficiency').textContent = eff.toFixed(1) + '%';\n\n            document.getElementById('readSpeed').textContent = Math.round(readSpeedMax) + ' MB\/s';\n            document.getElementById('writeSpeed').textContent = Math.round(writeSpeedMax) + ' MB\/s';\n            document.getElementById('readIOPS').textContent = Math.round(readIopsMax);\n            document.getElementById('writeIOPS').textContent = Math.round(writeIopsMax);\n\n            calculateTCO(usable);\n        }\n\n        function calculateTCO(usableTB) {\n            const N = selectedDisks.length;\n            const hddPrice = parseFloat(document.getElementById('hddPrice').value) || 0;\n            const controllerCost = parseFloat(document.getElementById('controllerCost').value) || 0;\n            const enclosureCost = parseFloat(document.getElementById('enclosureCost').value) || 0;\n            const spares = parseInt(document.getElementById('sparePrice').value) || 0;\n            const watts = parseFloat(document.getElementById('hddPower').value) || 0;\n            const kwhRate = parseFloat(document.getElementById('electricityRate').value) || 0;\n\n            const totalDisksToBuy = N + spares;\n            const capEx = (totalDisksToBuy * hddPrice) + controllerCost + enclosureCost;\n            \n            \/\/ \u00c9lectricit\u00e9 sur 5 ans (24\/7)\n            const totalWatts = N * watts;\n            const kwhPerYear = (totalWatts * 24 * 365) \/ 1000;\n            const powerCost5y = kwhPerYear * 5 * kwhRate;\n\n            const totalTco = capEx + powerCost5y;\n            const costPerTb = usableTB > 0 ? (totalTco \/ usableTB) : 0;\n\n            document.getElementById('capEx').textContent = Math.round(capEx);\n            document.getElementById('powerCost5y').textContent = Math.round(powerCost5y);\n            document.getElementById('totalTco').textContent = Math.round(totalTco);\n            document.getElementById('costPerTb').textContent = costPerTb.toFixed(2);\n        }\n\n        function resetResults() {\n            ['usableSpace','paritySpace','wastedSpace'].forEach(id => document.getElementById(id).textContent = '0 TB');\n            document.getElementById('efficiency').textContent = '0%';\n        }\n\n        function bindEvents() {\n            ['driveReadSpeed','driveWriteSpeed','driveIOPS','hddPrice','controllerCost','enclosureCost','hddPower','electricityRate','sparePrice'].forEach(id => {\n                const el = document.getElementById(id);\n                if(el) el.addEventListener('input', calculate);\n            });\n        }\n\n        document.addEventListener('DOMContentLoaded', init);\n        <\/script>\n        Everything You Need to Know About Hardware &amp; Traditional RAID Calculations Choosing the optimal storage configuration is critical for balancing data safety, disk performance, and budget. Whether you are deploying a enterprise DAS\/SAN storage array, configuring a hardware RAID controller (LSI, MegaRAID, Perc), or setting up a Linux MDADM array, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1085893,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-1085877","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/pages\/1085877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/comments?post=1085877"}],"version-history":[{"count":5,"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/pages\/1085877\/revisions"}],"predecessor-version":[{"id":1085894,"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/pages\/1085877\/revisions\/1085894"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/media\/1085893"}],"wp:attachment":[{"href":"https:\/\/raidzfscalculator.com\/en\/wp-json\/wp\/v2\/media?parent=1085877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}