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Backblaze reports an annual failure rate of 1.36% [0]. Since their cluster uses 2,400 drives, they would likely see ~32 failures a year (extra ~$4,000 annual ca
by gordonhart 1y ago
Backblaze reports an annual failure rate of 1.36% [0]. Since their cluster uses 2,400 drives, they would likely see ~32 failures a year (extra ~$4,000 annual capex, almost negligible).
[0] https://www.backblaze.com/cloud-storage/resources/hard-drive-test-data https://www.backblaze.com/cloud-storage/resources/hard-drive...
- joering2 1y agoTheir rate will probably be higher since they are utilizing used drives. From the spec: 2,400 drives. Mostly 12TB used enterprise drives (3/4 SATA, 1/4 SAS). The JBOD DS4246s work for either.
- antisthenes 1y agoNot necessarily, since disk failures are typically U-shaped. Buying used drives eliminates the high rate of early failure (but does get you a bit closer to the 2nd part of the U-curve). Typically most drives would become more obsolete before hitting the high failure rate of the right side of the U-curve from longevity (7+ years)
- toast0 1y agoI bet you still have a higher early failure rate because of the stress from transportation, even if there's no funny business. And I expect some funny business because used enterprise drives often come with wiped SMART data, some drives may have been retired by sophisticated clients who decided they were near failure.
- dist-epoch 1y agoPhysically moving the drive tends to reset the U-shape. Some will be damaged.
- deleted 1y ago[deleted]