Since the end of last year Backblaze company , which provides services of cheap cloud backup storage, publishes its statistics on drives used . And these statistics are interesting to us, simple users, for one simple reason: Backblaze for their servers uses conventional HDD consumer class, which can be purchased at retail. Total company used 38,441 disk, which contains more than 100 petabytes of information.
We recall some statistical calculations, which were published previously:
November 13, 2013: About 50% of hard drive is able to work for at least six years .
December 6, 2013: Hard drives, enterprise-class demonstrate comparable in reliability to consumer .
January 22, 2014: Statistics reliability of hard drives on the example of the data processing center .
May 13, 2014: Temperature has no significant effect on the life of the hard drive .
Blackbaze published on its blog a new record, citing statistics as of September this year.
Seen from the graph that drives Seagate 3TB volume began to fail more often: the failure rate increased from 7% to 12%.
The company also provides a detailed statistics of failures in the form of a table with a distribution model (model, volume, total, average age and the annual failure rate):
(Source: Blackbaze)
It is noteworthy that in the table opposite models HGST Megascale 4000.B (HGST HMS5C4040BLE640) and HGST Megascale 4000 (HGST HMS5C4040ALE640) - these drives Blackbaze company has just started and operated for about three months until there was not a single failure.
A company representative said that, as the statistics show, in the transition to enterprise-class drives there is no economic sense:
Today on Amazon, Seagate 3 TB enterprise drive costs $ 235 versus a Seagate 3 TB desktop drive costs $ 102. Most of the drives we get have a 3-year warranty, making failures a non-issue from a cost perspective for that period. However, even if there were no warranty, a 15% annual failure rate on the consumer "desktop" drive and a 0% failure rate on the "enterprise" drive, the breakeven would be 10 years, which is longer than we expect to even run the drives for.
The assumption that "enterprise" drives would work better than "consumer" drives has not been true in our tests. .
Seagate drives class Enterprise volume 3 TB are on the Amazon (online store) about $ 235 (at the time of writing this news is worth the price tag is now $ 240) against the usual "desktop" Seagate 3TB for $ 102 ($ 102.99). Related Products :
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