{"id":113429,"date":"2026-09-29T06:00:00","date_gmt":"2026-09-29T13:00:00","guid":{"rendered":"https:\/\/www.backblaze.com\/blog\/?p=113429"},"modified":"2026-09-28T12:24:51","modified_gmt":"2026-09-28T19:24:51","slug":"backblaze-drive-stats-for-q2-2026","status":"publish","type":"post","link":"https:\/\/www.backblaze.com\/blog\/backblaze-drive-stats-for-q2-2026\/","title":{"rendered":"Backblaze Drive Stats for Q2 2026"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"583\" src=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-Blog-Header-1440x820-1-1024x583.png\" alt=\"An illustration of hard drives with the words Q2 2026 Drive Stats. \" class=\"wp-image-113431\" srcset=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-Blog-Header-1440x820-1-1024x583.png 1024w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-Blog-Header-1440x820-1-300x171.png 300w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-Blog-Header-1440x820-1-768x437.png 768w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-Blog-Header-1440x820-1.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Running a storage cloud means serving as both builder and building inspector. You choose the materials, put them to work at scale, and return quarter after quarter to see how the structure is holding up. After 13+ years of publishing Drive Stats, we know the materials in this particular house pretty well. So, when our preferred home improvement store introduces a new and improved brick (so to speak) we want to understand how it fits into the build.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That question is becoming more relevant as higher-capacity drives become more (dare we say) load bearing. We\u2019ve already been tracking the performance of drives at 20TB and above as a group; later in this installment of Drive Stats, we\u2019ll talk about some of the differences between our current building blocks (CMR HDDs) and the new bricks. But first, to take this extended pun to its inevitable conclusion, the inspection (a.k.a. The Stats).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This Q2 2026 Drive Stats report begins with the latest walkthrough: the quarter\u2019s annualized failure rates, the models that stood out, and the lifetime record of the fleet. Then, we\u2019ll look at some of the emerging technologies that could shape the next phase of construction.<\/p>\n\n\n\n<div class=\"wp-block-backblaze-hubspot-callout abstract\"><h3 class=\"backblaze-callout__header\">Sign up for the Drive Stats webinar<\/h3><div class=\"backblaze-callout__body\">Ready to dive deeper into the data? Tune in Thursday, October 8 at 12 p.m. PT, as Sr. Market Intelligence Manager, Stephanie Doyle, and Director, Product Marketing, David Johnson review the trends.<\/div><div class=\"backblaze-callout__cta\"><!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-3efd7e36-9582-4bf1-b663-1ea4ca2c0710\"><span class=\"hs-cta-node hs-cta-3efd7e36-9582-4bf1-b663-1ea4ca2c0710\" id=\"hs-cta-3efd7e36-9582-4bf1-b663-1ea4ca2c0710\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/2832298\/3efd7e36-9582-4bf1-b663-1ea4ca2c0710\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-3efd7e36-9582-4bf1-b663-1ea4ca2c0710\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/2832298\/3efd7e36-9582-4bf1-b663-1ea4ca2c0710.png\"  alt=\"Join the Webinar\"\/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(2832298, '3efd7e36-9582-4bf1-b663-1ea4ca2c0710', {\"useNewLoader\":\"true\",\"region\":\"na1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code --><\/div><\/div>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Drive Stats: The digest version<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6abbcba519d95&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6abbcba519d95\" class=\"aligncenter size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"864\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-_-Infographic-1024x864.png\" alt=\"An infographic featuring data from the Q2 2026 Drive Stats report\" class=\"wp-image-113433\" srcset=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-_-Infographic-1024x864.png 1024w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-_-Infographic-300x253.png 300w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-_-Infographic-768x648.png 768w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-_-Infographic-1536x1296.png 1536w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-_-Infographic-1568x1323.png 1568w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Q2-2026-Drive-Stats-_-Infographic.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div>\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Q2 2026 Hard drive failure rates<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Throughout Q2 2026, Backblaze monitored 359,101 drives used to store data. For our evaluation, we removed from consideration 3,881 boot drives and 705 hard drives, as they did not meet the criteria to be included. We\u2019ll discuss the criteria we used in the next section of this report. Removing these drives leaves us with 354,415 hard drives to analyze. The table below shows the annualized failure rates for Q1 2026 for this collection of drives.<br \/><\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><strong>Backblaze Hard Drive Failure Rates for Q2 2026<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-align-center has-extra-small-font-size wp-block-paragraph\">Reporting period April 1, 2026\u2013June 30, 2026 inclusive<br \/>Drive models with drive count &gt; 100 and drive days &gt; 10,000 as of June 30, 2026 in Q2 2026.<\/p>\n<\/div><\/div>\n\n\n\n<table id=\"tablepress-96\" class=\"tablepress tablepress-id-96\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">MFG<\/th><th class=\"column-2\">Model<\/th><th class=\"column-3\">Size (TB)<\/th><th class=\"column-4\">Drive Count<\/th><th class=\"column-5\">Avg. Age (Months)<\/th><th class=\"column-6\">Drive Days<\/th><th class=\"column-7\">Failures<\/th><th class=\"column-8\">AFR (%)<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">HGST<\/td><td class=\"column-2\">HUH721212ALE600<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">2,599<\/td><td class=\"column-5\">78.4<\/td><td class=\"column-6\">236,107<\/td><td class=\"column-7\">7<\/td><td class=\"column-8\">1.08<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">HGST<\/td><td class=\"column-2\">HUH721212ALE604<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">13,196<\/td><td class=\"column-5\">59.4<\/td><td class=\"column-6\">1,190,182<\/td><td class=\"column-7\">109<\/td><td class=\"column-8\">3.34<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">HGST<\/td><td class=\"column-2\">HUH721212ALN604<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">9,694<\/td><td class=\"column-5\">83.8<\/td><td class=\"column-6\">861,297<\/td><td class=\"column-7\">180<\/td><td class=\"column-8\">7.63<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST8000DM002<\/td><td class=\"column-3\">8<\/td><td class=\"column-4\">6,903<\/td><td class=\"column-5\">114.8<\/td><td class=\"column-6\">563,210<\/td><td class=\"column-7\">38<\/td><td class=\"column-8\">2.46<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST8000NM000A<\/td><td class=\"column-3\">8<\/td><td class=\"column-4\">239<\/td><td class=\"column-5\">40.4<\/td><td class=\"column-6\">21,499<\/td><td class=\"column-7\">0<\/td><td class=\"column-8\">0<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST8000NM0055<\/td><td class=\"column-3\">8<\/td><td class=\"column-4\">13,112<\/td><td class=\"column-5\">104.7<\/td><td class=\"column-6\">1,177,541<\/td><td class=\"column-7\">111<\/td><td class=\"column-8\">3.44<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST10000NM0086<\/td><td class=\"column-3\">10<\/td><td class=\"column-4\">965<\/td><td class=\"column-5\">101.7<\/td><td class=\"column-6\">86,092<\/td><td class=\"column-7\">22<\/td><td class=\"column-8\">9.33<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST12000NM0007<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">972<\/td><td class=\"column-5\">78.8<\/td><td class=\"column-6\">87,496<\/td><td class=\"column-7\">10<\/td><td class=\"column-8\">4.17<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST12000NM0008<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">18,521<\/td><td class=\"column-5\">73.7<\/td><td class=\"column-6\">1,671,057<\/td><td class=\"column-7\">145<\/td><td class=\"column-8\">3.17<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST12000NM000J<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">1,079<\/td><td class=\"column-5\">22<\/td><td class=\"column-6\">97,746<\/td><td class=\"column-7\">0<\/td><td class=\"column-8\">0<\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST12000NM001G<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">13,177<\/td><td class=\"column-5\">63.7<\/td><td class=\"column-6\">1,193,856<\/td><td class=\"column-7\">44<\/td><td class=\"column-8\">1.35<\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST14000NM000J<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">497<\/td><td class=\"column-5\">17<\/td><td class=\"column-6\">43,349<\/td><td class=\"column-7\">0<\/td><td class=\"column-8\">0<\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST14000NM001G<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">10,498<\/td><td class=\"column-5\">63.2<\/td><td class=\"column-6\">949,396<\/td><td class=\"column-7\">39<\/td><td class=\"column-8\">1.5<\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST14000NM0138<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">1,235<\/td><td class=\"column-5\">65.5<\/td><td class=\"column-6\">110,410<\/td><td class=\"column-7\">25<\/td><td class=\"column-8\">8.26<\/td>\n<\/tr>\n<tr class=\"row-16\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST16000NM000J<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">171<\/td><td class=\"column-5\">15.4<\/td><td class=\"column-6\">14,221<\/td><td class=\"column-7\">1<\/td><td class=\"column-8\">2.57<\/td>\n<\/tr>\n<tr class=\"row-17\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST16000NM001G<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">35,100<\/td><td class=\"column-5\">43.7<\/td><td class=\"column-6\">3,162,117<\/td><td class=\"column-7\">56<\/td><td class=\"column-8\">0.65<\/td>\n<\/tr>\n<tr class=\"row-18\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST16000NM002J<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">467<\/td><td class=\"column-5\">41.7<\/td><td class=\"column-6\">42,086<\/td><td class=\"column-7\">4<\/td><td class=\"column-8\">3.47<\/td>\n<\/tr>\n<tr class=\"row-19\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST24000NM002H<\/td><td class=\"column-3\">24<\/td><td class=\"column-4\">9,631<\/td><td class=\"column-5\">12.2<\/td><td class=\"column-6\">861,587<\/td><td class=\"column-7\">78<\/td><td class=\"column-8\">3.3<\/td>\n<\/tr>\n<tr class=\"row-20\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG07ACA14TA<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">37,171<\/td><td class=\"column-5\">67.1<\/td><td class=\"column-6\">3,368,924<\/td><td class=\"column-7\">179<\/td><td class=\"column-8\">1.94<\/td>\n<\/tr>\n<tr class=\"row-21\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG07ACA14TEY<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">989<\/td><td class=\"column-5\">42.8<\/td><td class=\"column-6\">89,164<\/td><td class=\"column-7\">6<\/td><td class=\"column-8\">2.46<\/td>\n<\/tr>\n<tr class=\"row-22\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG08ACA16TA<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">39,932<\/td><td class=\"column-5\">33.7<\/td><td class=\"column-6\">3,614,263<\/td><td class=\"column-7\">100<\/td><td class=\"column-8\">1.01<\/td>\n<\/tr>\n<tr class=\"row-23\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG08ACA16TE<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">6,306<\/td><td class=\"column-5\">51.4<\/td><td class=\"column-6\">568,379<\/td><td class=\"column-7\">16<\/td><td class=\"column-8\">1.03<\/td>\n<\/tr>\n<tr class=\"row-24\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG08ACA16TEY<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">4,857<\/td><td class=\"column-5\">53.5<\/td><td class=\"column-6\">439,243<\/td><td class=\"column-7\">44<\/td><td class=\"column-8\">3.66<\/td>\n<\/tr>\n<tr class=\"row-25\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG09ACA16TE<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">905<\/td><td class=\"column-5\">6.2<\/td><td class=\"column-6\">68,429<\/td><td class=\"column-7\">2<\/td><td class=\"column-8\">1.07<\/td>\n<\/tr>\n<tr class=\"row-26\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG10ACA20TE<\/td><td class=\"column-3\">20<\/td><td class=\"column-4\">25,270<\/td><td class=\"column-5\">12.1<\/td><td class=\"column-6\">2,117,524<\/td><td class=\"column-7\">64<\/td><td class=\"column-8\">1.1<\/td>\n<\/tr>\n<tr class=\"row-27\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG11ACA24TE<\/td><td class=\"column-3\">24<\/td><td class=\"column-4\">9,620<\/td><td class=\"column-5\">5.8<\/td><td class=\"column-6\">824,903<\/td><td class=\"column-7\">13<\/td><td class=\"column-8\">0.58<\/td>\n<\/tr>\n<tr class=\"row-28\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH721414ALE6L4<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">8,635<\/td><td class=\"column-5\">64.2<\/td><td class=\"column-6\">783,318<\/td><td class=\"column-7\">23<\/td><td class=\"column-8\">1.07<\/td>\n<\/tr>\n<tr class=\"row-29\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH721816ALE6L0<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">2,970<\/td><td class=\"column-5\">53.3<\/td><td class=\"column-6\">268,875<\/td><td class=\"column-7\">30<\/td><td class=\"column-8\">4.07<\/td>\n<\/tr>\n<tr class=\"row-30\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH721816ALE6L4<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">26,827<\/td><td class=\"column-5\">37.5<\/td><td class=\"column-6\">2,432,374<\/td><td class=\"column-7\">77<\/td><td class=\"column-8\">1.16<\/td>\n<\/tr>\n<tr class=\"row-31\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH722222ALE6L4<\/td><td class=\"column-3\">22<\/td><td class=\"column-4\">45,665<\/td><td class=\"column-5\">19.1<\/td><td class=\"column-6\">4,146,339<\/td><td class=\"column-7\">63<\/td><td class=\"column-8\">0.55<\/td>\n<\/tr>\n<tr class=\"row-32\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH722626ALE6L4<\/td><td class=\"column-3\">26<\/td><td class=\"column-4\">7,212<\/td><td class=\"column-5\">3.4<\/td><td class=\"column-6\">462,366<\/td><td class=\"column-7\">12<\/td><td class=\"column-8\">0.95<\/td>\n<\/tr>\n<\/tbody>\n<tfoot>\n<tr class=\"row-33\">\n\t<th class=\"column-1\">Totals<\/th><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><th class=\"column-4\">354,415<\/th><td class=\"column-5\"><\/td><th class=\"column-6\">31,553,350<\/th><th class=\"column-7\">1,498<\/th><th class=\"column-8\">1.73<\/th>\n<\/tr>\n<\/tfoot>\n<\/table>\n<!-- #tablepress-96 from cache -->\n\n\n<h3 class=\"wp-block-heading\">Note and observations<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The quarterly AFR is 1.73%<\/strong>, the highest it\u2019s been in quite a while. We\u2019ll talk about the reasons why in just a bit, but for now, here\u2019s your quarter-over-quarter tracking of the failure rate:<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6abbcba51ac9a&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6abbcba51ac9a\" class=\"aligncenter size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"456\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Quarterly-Chart-1024x456.png\" alt=\"A chart showing quarterly AFR date\" class=\"wp-image-113435\" srcset=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Quarterly-Chart-1024x456.png 1024w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Quarterly-Chart-300x134.png 300w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Quarterly-Chart-768x342.png 768w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Quarterly-Chart-1536x684.png 1536w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Quarterly-Chart-2048x912.png 2048w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Quarterly-Chart-1568x698.png 1568w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div>\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>As usual, let\u2019s round up the honor roll.<\/strong> These drives had zero failures:&nbsp;\n<ul class=\"wp-block-list\">\n<li>Seagate ST8000NM000A (8TB)<\/li>\n\n\n\n<li>Seagate ST12000NM000J (12TB)&nbsp;<\/li>\n\n\n\n<li>Seagate ST14000NM000J (14TB)&nbsp;<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>And these drives had one:&nbsp;\n<ul class=\"wp-block-list\">\n<li>Seagate ST16000NM000J (16TB)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">No typos here, folks: that\u2019s a clean sweep by Seagate.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Out with the old. <\/strong>This quarter, we\u2019ve seen two drives fully retire, the 4TB HGST HMS5C4040BLE640 at nearly nine years old total; and, the 8TB HGST HUH728080ALE600 at nearly eight years old.&nbsp;<\/li>\n\n\n\n<li><strong>But where is the new? <\/strong>Just like last quarter, we have no new drive models\u2014a curiosity, especially to have that happen two quarters in a row. But, also like last quarter, that doesn\u2019t mean no new deployments. While most drive models\u2019 counts stayed more or less the same (plus or minus replacements), we once again see deployment concentrated in the 20TB+ drives.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">What\u2019s going on with the high-end outliers?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">This quarter we had three outliers, which, according to a quartile analysis, defines an outlier as an AFR above 6.95%. Those drives are:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HGST HUH721212ALN604 (12TB)\u20147.63%&nbsp;<\/li>\n\n\n\n<li>Seagate ST10000NM0086 (10TB)\u20149.33%<\/li>\n\n\n\n<li>Seagate ST14000NM0138 (14TB)\u20148.26%<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Each of these drives have some pretty clear reasons for high failure rates. The HGST drive is nearly seven&nbsp; years old, and the 10TB Seagate was nearly 8.5 years old.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Meanwhile, both the Seagate drives have a pretty low drive count\u2014the 10TB drive only has 965; whereas the 14TB has 1,235. That means that while they only had 22 and 25 failures (respectively) their AFRs were quite high.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s worth noting there were a total of seven drives that still had an AFR of &gt;3.0%. While we\u2019ve just determined those aren\u2019t outliers, that\u2019s still quite a few high AFRs compared to other quarters\u2014that means that 10 out 31 drives had an AFR higher than 3.0%.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I haven\u2019t done a full analysis of how rare it is to have our distribution of &gt;3.0% skew that high, but a casual look at the last few quarters show it to be skewed towards the higher end of the spectrum. That will, of course, bring up our average. Something to keep an eye on as we move forward.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Standard definitions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As mentioned, we remove drives that don\u2019t meet our criteria. We\u2019ve covered the reasons that we\u2019ve designed these exclusions in <a href=\"https:\/\/www.backblaze.com\/blog\/category\/cloud-storage\/hard-drive-stats\/\">past reports<\/a>, but here\u2019s the quick and dirty:<\/p>\n\n\n\n<table id=\"tablepress-78\" class=\"tablepress tablepress-id-78\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Period<\/th><th class=\"column-2\">Drive Count<\/th><th class=\"column-3\">Drive Days<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\"><strong>Quarterly<\/strong><\/td><td class=\"column-2\">> 100<\/td><td class=\"column-3\">> 10,000<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\"><strong>Annual<\/strong><\/td><td class=\"column-2\">> 250<\/td><td class=\"column-3\">> 50,000<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\"><strong>Lifetime<\/strong><\/td><td class=\"column-2\">> 500<\/td><td class=\"column-3\">>100,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-78 from cache -->\n\n\n<p class=\"wp-block-paragraph\">Regardless of whether or not a given drive model is included in this article\u2019s charts and tables, all of the line item data is included in our Drive Stats dataset which you can download by visiting our Drive Stats page.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lifetime hard drive failure rates<\/h2>\n\n\n\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><strong>Backblaze Lifetime Hard Drive Failure Rates <\/strong><\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-align-center has-extra-small-font-size wp-block-paragraph\">Reporting period ending June 30, 2026 inclusive<br \/>Drive models with &gt; 500 drives and &gt; 100,000 lifetime drive days<\/p>\n<\/div><\/div>\n\n\n\n<table id=\"tablepress-95\" class=\"tablepress tablepress-id-95\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">MFG<\/th><th class=\"column-2\">Model<\/th><th class=\"column-3\">Size (TB)<\/th><th class=\"column-4\">Drive Count<\/th><th class=\"column-5\">Avg. Age (Months)<\/th><th class=\"column-6\">Drive Days<\/th><th class=\"column-7\">Failures<\/th><th class=\"column-8\">AFR (%)<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">HGST<\/td><td class=\"column-2\">HUH721212ALE600<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">2,599<\/td><td class=\"column-5\">77.4<\/td><td class=\"column-6\">6,351,520<\/td><td class=\"column-7\">111<\/td><td class=\"column-8\">0.64<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">HGST<\/td><td class=\"column-2\">HUH721212ALE604<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">13,196<\/td><td class=\"column-5\">57.7<\/td><td class=\"column-6\">25,209,144<\/td><td class=\"column-7\">1,224<\/td><td class=\"column-8\">1.77<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">HGST<\/td><td class=\"column-2\">HUH721212ALN604<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">9,694<\/td><td class=\"column-5\">79.8<\/td><td class=\"column-6\">27,776,092<\/td><td class=\"column-7\">1,858<\/td><td class=\"column-8\">2.44<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST8000DM002<\/td><td class=\"column-3\">8<\/td><td class=\"column-4\">6,903<\/td><td class=\"column-5\">107.3<\/td><td class=\"column-6\">33,679,046<\/td><td class=\"column-7\">1,418<\/td><td class=\"column-8\">1.54<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST8000NM0055<\/td><td class=\"column-3\">8<\/td><td class=\"column-4\">13,112<\/td><td class=\"column-5\">97.1<\/td><td class=\"column-6\">46,308,955<\/td><td class=\"column-7\">2,515<\/td><td class=\"column-8\">1.98<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST10000NM0086<\/td><td class=\"column-3\">10<\/td><td class=\"column-4\">965<\/td><td class=\"column-5\">92.1<\/td><td class=\"column-6\">3,652,808<\/td><td class=\"column-7\">328<\/td><td class=\"column-8\">3.28<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST12000NM0007<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">972<\/td><td class=\"column-5\">31.7<\/td><td class=\"column-6\">37,413,220<\/td><td class=\"column-7\">2,307<\/td><td class=\"column-8\">2.25<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST12000NM0008<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">18,521<\/td><td class=\"column-5\">69.8<\/td><td class=\"column-6\">44,683,877<\/td><td class=\"column-7\">2,612<\/td><td class=\"column-8\">2.13<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST12000NM000J<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">1,079<\/td><td class=\"column-5\">21.5<\/td><td class=\"column-6\">730,603<\/td><td class=\"column-7\">22<\/td><td class=\"column-8\">1.1<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST12000NM001G<\/td><td class=\"column-3\">12<\/td><td class=\"column-4\">13,177<\/td><td class=\"column-5\">62.3<\/td><td class=\"column-6\">26,300,571<\/td><td class=\"column-7\">723<\/td><td class=\"column-8\">1<\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST14000NM001G<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">10,498<\/td><td class=\"column-5\">61.2<\/td><td class=\"column-6\">20,975,305<\/td><td class=\"column-7\">795<\/td><td class=\"column-8\">1.38<\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST14000NM0138<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">1,235<\/td><td class=\"column-5\">56<\/td><td class=\"column-6\">2,878,064<\/td><td class=\"column-7\">464<\/td><td class=\"column-8\">5.88<\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST16000NM001G<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">35,100<\/td><td class=\"column-5\">43.1<\/td><td class=\"column-6\">47,227,179<\/td><td class=\"column-7\">876<\/td><td class=\"column-8\">0.68<\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\">Seagate<\/td><td class=\"column-2\">ST24000NM002H<\/td><td class=\"column-3\">24<\/td><td class=\"column-4\">9,631<\/td><td class=\"column-5\">12.1<\/td><td class=\"column-6\">3,640,687<\/td><td class=\"column-7\">323<\/td><td class=\"column-8\">3.24<\/td>\n<\/tr>\n<tr class=\"row-16\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG07ACA14TA<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">37,171<\/td><td class=\"column-5\">65.4<\/td><td class=\"column-6\">78,387,008<\/td><td class=\"column-7\">2,293<\/td><td class=\"column-8\">1.07<\/td>\n<\/tr>\n<tr class=\"row-17\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG07ACA14TEY<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">989<\/td><td class=\"column-5\">41.1<\/td><td class=\"column-6\">1,324,965<\/td><td class=\"column-7\">64<\/td><td class=\"column-8\">1.76<\/td>\n<\/tr>\n<tr class=\"row-18\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG08ACA16TA<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">39,932<\/td><td class=\"column-5\">33.2<\/td><td class=\"column-6\">41,520,709<\/td><td class=\"column-7\">1,213<\/td><td class=\"column-8\">1.07<\/td>\n<\/tr>\n<tr class=\"row-19\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG08ACA16TE<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">6,306<\/td><td class=\"column-5\">49.9<\/td><td class=\"column-6\">10,113,070<\/td><td class=\"column-7\">341<\/td><td class=\"column-8\">1.23<\/td>\n<\/tr>\n<tr class=\"row-20\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG08ACA16TEY<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">4,857<\/td><td class=\"column-5\">52.1<\/td><td class=\"column-6\">8,475,023<\/td><td class=\"column-7\">564<\/td><td class=\"column-8\">2.43<\/td>\n<\/tr>\n<tr class=\"row-21\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG09ACA16TE<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">905<\/td><td class=\"column-5\">6.1<\/td><td class=\"column-6\">169,812<\/td><td class=\"column-7\">6<\/td><td class=\"column-8\">1.29<\/td>\n<\/tr>\n<tr class=\"row-22\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG10ACA20TE<\/td><td class=\"column-3\">20<\/td><td class=\"column-4\">25,270<\/td><td class=\"column-5\">12.1<\/td><td class=\"column-6\">9,324,427<\/td><td class=\"column-7\">202<\/td><td class=\"column-8\">0.79<\/td>\n<\/tr>\n<tr class=\"row-23\">\n\t<td class=\"column-1\">Toshiba<\/td><td class=\"column-2\">MG11ACA24TE<\/td><td class=\"column-3\">24<\/td><td class=\"column-4\">9,620<\/td><td class=\"column-5\">5.8<\/td><td class=\"column-6\">1,694,377<\/td><td class=\"column-7\">23<\/td><td class=\"column-8\">0.5<\/td>\n<\/tr>\n<tr class=\"row-24\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH721414ALE6L4<\/td><td class=\"column-3\">14<\/td><td class=\"column-4\">8,635<\/td><td class=\"column-5\">63.5<\/td><td class=\"column-6\">17,127,349<\/td><td class=\"column-7\">254<\/td><td class=\"column-8\">0.54<\/td>\n<\/tr>\n<tr class=\"row-25\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH721816ALE6L0<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">2,970<\/td><td class=\"column-5\">52.8<\/td><td class=\"column-6\">4,934,292<\/td><td class=\"column-7\">162<\/td><td class=\"column-8\">1.2<\/td>\n<\/tr>\n<tr class=\"row-26\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH721816ALE6L4<\/td><td class=\"column-3\">16<\/td><td class=\"column-4\">26,827<\/td><td class=\"column-5\">37.2<\/td><td class=\"column-6\">30,895,588<\/td><td class=\"column-7\">471<\/td><td class=\"column-8\">0.56<\/td>\n<\/tr>\n<tr class=\"row-27\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH722222ALE6L4<\/td><td class=\"column-3\">22<\/td><td class=\"column-4\">45,665<\/td><td class=\"column-5\">19<\/td><td class=\"column-6\">26,618,389<\/td><td class=\"column-7\">423<\/td><td class=\"column-8\">0.58<\/td>\n<\/tr>\n<tr class=\"row-28\">\n\t<td class=\"column-1\">WDC<\/td><td class=\"column-2\">WUH722626ALE6L4<\/td><td class=\"column-3\">26<\/td><td class=\"column-4\">7,212<\/td><td class=\"column-5\">3.4<\/td><td class=\"column-6\">736,527<\/td><td class=\"column-7\">17<\/td><td class=\"column-8\">0.84<\/td>\n<\/tr>\n<\/tbody>\n<tfoot>\n<tr class=\"row-29\">\n\t<th class=\"column-1\">Totals<\/th><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><th class=\"column-4\">353,041<\/th><td class=\"column-5\"><\/td><th class=\"column-6\">558,148,607<\/th><th class=\"column-7\">21,609<\/th><th class=\"column-8\">1.41<\/th>\n<\/tr>\n<\/tfoot>\n<\/table>\n<!-- #tablepress-95 from cache -->\n\n\n<h3 class=\"wp-block-heading\">Notes and observations<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The lifetime AFR is consistent. <\/strong>We see a slight uptick this quarter to 1.41%.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6abbcba51c0b8&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6abbcba51c0b8\" class=\"aligncenter size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"456\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Lifetime-Chart-1024x456.png\" alt=\"A chart showing lifetime AFRs.\" class=\"wp-image-113436\" srcset=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Lifetime-Chart-1024x456.png 1024w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Lifetime-Chart-300x134.png 300w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Lifetime-Chart-768x342.png 768w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Lifetime-Chart-1536x684.png 1536w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Lifetime-Chart-2048x912.png 2048w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/Drive-Stats-Q2-2026-Cleaned-Up-Lifetime-Chart-1568x698.png 1568w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div>\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Four models don\u2019t make the cut on the lifetime table. <\/strong>These models didn\u2019t make the drive count minimum to be reported in the lifetime table:\n<ul class=\"wp-block-list\">\n<li>Seagate ST8000NM000A (8TB)\u2014239 drives&nbsp;<\/li>\n\n\n\n<li>Seagate ST14000NM000J (14TB)\u2014497 drives&nbsp;<\/li>\n\n\n\n<li>Seagate ST16000NM000J (16TB)\u2014171 drives<\/li>\n\n\n\n<li>Seagate ST16000NM002J (16TB)\u2014467 drives<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Interestingly, the first three on that list all were on our zero failure list as well.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">About those bigger drives<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Recently, we\u2019ve spent a lot of time in this series talking about high-capacity drives. The 20TB+ club has grown from a curiosity to more than 25% of the drives in this quarter\u2019s dataset, and deployment continues to concentrate at the larger end of the range.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As an industry, we\u2019ve been watching the steady drive towards higher capacity drives\u2014<a href=\"https:\/\/www.tomshardware.com\/pc-components\/hdds\/western-digital-unveils-massive-40tb-hdd-that-records-data-using-lasers-plans-100tb-hamr-hard-drives-by-2029\">WD announced a 40TB UltraSMR<\/a> drive just this year, with a roadmap that shows how they\u2019ll get to 100TB by 2029. One way manufacturers are increasing that density is by changing how the tracks themselves are arranged on disk, and that has implications for how data centers read and write data. So, let\u2019s talk about what that looks like.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CMR, SMR, and a word about roofing<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hard drives write data in concentric tracks. Each track can be rewritten independently. Before we get into anything else, it\u2019s important to understand that there\u2019s a physical size difference between the read and write heads in a hard drive.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"468\" src=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image8-1024x468.png\" alt=\"\" class=\"wp-image-113437\" srcset=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image8-1024x468.png 1024w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image8-300x137.png 300w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image8-768x351.png 768w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image8.png 1318w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">A simplified diagram of the relative sizes of read and write heads in CMR. <br \/><a href=\"https:\/\/www.google.com\/url?q=https:\/\/horizontechnology.com\/news\/shingled-magnetic-recording-smr-data-center-capacity\/&amp;sa=D&amp;source=docs&amp;ust=1790615259644832&amp;usg=AOvVaw3WvwgoC4SzOjo49apkHsgd\">Source<\/a>.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">With conventional magnetic recording (CMR), those tracks sit side by side with guard space between them. Shingled magnetic recording (SMR) changes the track geometry. The tracks overlap, much like roof shingles\u2014a naming decision that, at least for this report, we decided to really lean in on.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Now back to those drive heads: this technique works because a drive\u2019s write head lays down a wider track than its read head needs to retrieve. Overlap part of each track with the next one and the data remains readable, while more of it fits on the platter. Depending on the implementation, that can add roughly 10% to 25% more capacity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The tradeoff also resembles actual shingles: changing something in the middle can disturb what was layered over it. SMR organizes tracks into bands or zones, so updating data may require the drive\u2014or the software managing it\u2014to reorganize a larger section.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">How that behavior is managed matters, so you actually will see a few different flavors of SMR:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Drive-managed SMR:<\/strong> The drive\u2019s firmware handles data placement and band rewriting. It looks like a conventional block device to the host, but write performance can become unpredictable.<\/li>\n\n\n\n<li><strong>Host-managed SMR:<\/strong> The operating system or application writes data sequentially within designated zones. This requires compatible software but gives the host greater control.<\/li>\n\n\n\n<li><strong>Host-aware SMR:<\/strong> Supports SMR-aware commands while retaining some compatibility with conventional workflows.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">It can be a bit hard to grasp without a visual, so here\u2019s what that looks like in practice. Here\u2019s an exploded version of an SMR write band:&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"936\" height=\"516\" src=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image3.png\" alt=\"\" class=\"wp-image-113439\" srcset=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image3.png 936w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image3-300x165.png 300w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image3-768x423.png 768w\" sizes=\"auto, (max-width: 936px) 100vw, 936px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.google.com\/url?q=https:\/\/zonedstorage.io\/docs\/introduction\/smr&amp;sa=D&amp;source=docs&amp;ust=1790615259643220&amp;usg=AOvVaw0g8fOuN1frkgtry82rWkKW\">Source<\/a>.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">And a side-by-side of CMR and SMR.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image1-1024x512.png\" alt=\"\" class=\"wp-image-113438\" srcset=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image1-1024x512.png 1024w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image1-300x150.png 300w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image1-768x384.png 768w, https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2026\/09\/image1.png 1136w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.google.com\/url?q=https:\/\/zonedstorage.io\/docs\/introduction\/smr&amp;sa=D&amp;source=docs&amp;ust=1790615259643714&amp;usg=AOvVaw24_itbwTHE4_r5070t2HN6\">Source<\/a>.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">CMR vs. SMR Drives: What\u2019s the difference?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To really nail it down (pun, as always, intended), here\u2019s a handy-dandy table to compare:&nbsp;<\/p>\n\n\n\n<table id=\"tablepress-97\" class=\"tablepress tablepress-id-97\">\n<thead>\n<tr class=\"row-1\">\n\t<td class=\"column-1\"><\/td><th class=\"column-2\">CMR<\/th><th class=\"column-3\">SMR<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\"><strong>Track layout<\/strong><\/td><td class=\"column-2\">Side by side, with guard space<\/td><td class=\"column-3\">Overlapping, like shingles<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\"><strong>Capacity on comparable platters<\/strong><\/td><td class=\"column-2\">Baseline<\/td><td class=\"column-3\">Roughly 10%\u201325% higher<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\"><strong>Reads<\/strong><\/td><td class=\"column-2\">Predictable<\/td><td class=\"column-3\">Generally comparable<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\"><strong>Sequential writes<\/strong><\/td><td class=\"column-2\">Well suited<\/td><td class=\"column-3\">Well suited<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\"><strong>Random rewrites<\/strong><\/td><td class=\"column-2\">Any track can be updated directly<\/td><td class=\"column-3\">May require reorganizing a band or zone<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\"><strong>Who handles the complexity<\/strong><\/td><td class=\"column-2\">Standard storage stack<\/td><td class=\"column-3\">Drive firmware or SMR-aware host software<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\"><strong>Best fit<\/strong><\/td><td class=\"column-2\">General-purpose workloads<\/td><td class=\"column-3\">Sequential or append-oriented workloads<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-97 from cache -->\n\n\n<h2 class=\"wp-block-heading\">What CMR vs. SMR means in a data center<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The appeal is straightforward: more terabytes per drive slot, in the same rack space, at roughly similar drive-level power. That can improve both dollars per terabyte and watts per terabyte without requiring anyone to build another building. At data center-scale, a modest density gain becomes a very large number with a dollar sign in front of it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But, SMR cares about workload shape. Sequential and append-oriented writes play nicely with its architecture; frequent small rewrites create more work. Depending on the type of SMR, the software stack may also need to understand zones and place data accordingly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That makes qualification less \u201cswap the drive\u201d and more \u201cplan the project.\u201d Capacity and AFR still matter, but so do sustained write behavior, rebuild performance, parity or erasure-coding overhead, firmware, and the storage software sitting above the drive.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What about HAMR?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Without making the obvious joke, let\u2019s talk about how HAMR fits into the conversation.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HAMR is a hard drive technology that briefly heats a microscopic spot on the platter with a laser as data is written. The heat allows the drive to write to smaller, more stable magnetic grains, increasing the amount of data that can fit on each platter. And, while most hard drive platters have traditionally been built on aluminum-alloy substrates, glass is standard in 2.5-inch HAMR drives and increasingly common in high-capacity 3.5-inch HAMR designs.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because those techniques solve different problems, manufacturers can combine them. So, the answer to \u201cSMR or HAMR?\u201d is mostly \u201cyes.\u201d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What does this mean for Drive Stats?&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are no SMR drives in the Backblaze fleet today, and none of the drives in the tables above are shingled. But SMR is being developed across the hard drive industry, and \u201cnot today\u201d does not mean \u201cnot ever.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We\u2019ll approach it the same way we approached the first higher-capacity drives: as SMR drives enter the fleet, we\u2019ll flag which ones they are, and we\u2019ll all get to chat about their AFRs.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Get the full dataset<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As always, the complete dataset used to create the tables and charts in this report is available on our <a href=\"https:\/\/www.backblaze.com\/cloud-storage\/resources\/hard-drive-test-data\">Hard Drive Test Data page<\/a>. You can download and use this data for free for your own purpose. All we ask are three things:&nbsp;<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>You cite Backblaze as the source if you use the data;&nbsp;<\/li>\n\n\n\n<li>You accept that you are solely responsible for how you use the data, and;&nbsp;<\/li>\n\n\n\n<li>You do not sell this data itself to anyone; it is free.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re a new Drive Stats fan, consider <a href=\"https:\/\/hub.backblaze.com\/drive-stats-newsletter-sign-up\">signing up for the newsletter.<\/a> If you\u2019re not ready for that kind of commitment, sound off in the comments section below or reach out <a href=\"mailto:evangelism@backblaze.com\">directly to us<\/a> to let us know what you\u2019re working on.<br \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We analyzed 354,415 data drives for Q2 2026, revealing a 1.73% quarterly annualized failure rate and a 1.41% lifetime rate. Explore standout models, high-capacity drive deployment, and what CMR, SMR, and HAMR could mean for future data center storage strategies.<\/p>\n","protected":false},"author":182,"featured_media":113431,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":"","jetpack_post_was_ever_published":false,"_ppma_block_editor_authors":""},"categories":[7,434,438,457,1],"tags":[468],"ppma_author":[503],"class_list":["post-113429","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cloud-storage","category-featured-1","category-featured-cloud-storage","category-hard-drive-stats","category-uncategorized","tag-b2cloud","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Q2 2026 Drive Stats: Hard Drive Failure Rates<\/title>\n<meta name=\"description\" content=\"Explore Q2 2026 failure rates across 354,415 Backblaze drives, plus standout models and emerging CMR, SMR, and HAMR storage technologies.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.backblaze.com\/blog\/backblaze-drive-stats-for-q2-2026\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Q2 2026 Drive Stats: Hard Drive Failure Rates\" \/>\n<meta property=\"og:description\" content=\"Explore Q2 2026 failure rates across 354,415 Backblaze drives, plus standout models and emerging CMR, SMR, and HAMR storage technologies.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.backblaze.com\/blog\/backblaze-drive-stats-for-q2-2026\/\" \/>\n<meta property=\"og:site_name\" content=\"Backblaze Blog | Cloud Storage &amp; 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