![\"\"](\"https:\/\/blocksandfiles.com\/wp-content\/uploads\/2025\/05\/Backblaze-disk-AFR-teaser.jpg\" "\\"Backblaze")
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Backblaze<\/a> published its disk drive annual failure rates<\/a> (AFRs) for Q1 2025, noting that the quarterly failure rate went up from 1.35 to 1.42 percent.\u00a0<\/p>\n The cloud storage company was tracking 317,833 drives across models that had more than 100 drives in operation as of March 31, and that collectively logged over 10,000 drive-days during the quarter. The supplier\/model AFRs were:<\/p>\n We sorted this table by ascending AFR and then graphed it on that basis:<\/p>\n Seagate has three of the top four AFR spots.<\/p>\n Backblaze noted that the four higher-end outlier AFRs, which contributed to the rise in overall AFR from the previous quarter, were:<\/p>\n Four drive models had zero failures in the quarter: the 4 TB HGST (model HMS5C4040ALE640), the Seagate 8 TB (model ST8000NM000A), the Seagate 12 TB (model ST12000NM000J), the and Seagate 14TB (model ST14000NM000J).<\/p>\n Overall, Backblaze\u2019s \u201c4 TB drives showed wonderfully low failure rates, with yet another quarter of zero failures from (HGST) model HMS5C4040ALE640 and 0.34 percent AFR from model (HGST) HMS5C4040BLE640.\u201d\u00a0<\/p>\n It also tracks lifetime AFRs and the only drive with a more than 2.85 percent AFR is Seagate\u2019s 14 TB (ST14000NM0138) at 5.97 percent for 1,322 drives. But a second 14 TB Seagate drive model, the ST14000NM001G, with 33,817 drives in operation, has a much lower 1.42 percent AFR \u2013 problem sorted.<\/p>\n<\/figure>\n<\/div>\n<\/figure>\n<\/div>\n\n