Statistical data by manufacturer / model of HDD failure rate Backblaze publishes the 3rd quarter version of 2016

ByKenming Wang

Cloud storage that can be used at low cost "B2 Cloud Storage"We are in operationBackblaze, We released the third quarter version of data released on the basis of manufacturer / model for failure rate of HDD used in storage.

2016 Hard Drive Failure Rates for 2TB - 8TB Drives
https://www.backblaze.com/blog/hard-drive-failure-rates-q3-2016/


In the 2nd quarter of 2016 to 3rd quarter of 2016, Backblaze replaced 3,500 HGST / WDC 2TB HDD HDDs with 2400 8TB HDD made by Seagate. As a result, the number of HDDs being operated decreases by more than 1,000 units from 68,813 units to 67,442 units, but the data capacity itself has increased.

There are 17 models of 4 manufacturers of HDDs that are operating 45 or more. Looking at failure rate "WD60EFRX"Is 11.31% (13 out of 451), followed by" ST 4000 DX000 "10.20% (5 out of 192). The overwhelmingly large number of "ST 4000 DM000" failures were 278 units, the failure rate was 3.18%, third in third place.


By the way, the failure rate of "ST 4000 DX000" in the previous quarter is high, 19.81%, which is 9.61 points lower than that, but it can be said that it has been operated stably, "ST 4000 DM 000" increased by 0.52 points, "WF 60 EF RX" increased by 10.43 points The figures have deteriorated considerably.

In BackblazeZettabyteIn order to store data safely at low cost in operating class storage of cloud storageBackblaze storage podusing. There are 45 or 60 HDDs in the pod, and 20 pods form one "Backblaze Vault" system. Since 8 TB HDDs are used, there are capacity of 7.2 PB (petabytes) for one vault and 9.6 PB for 60 if there are 45 HDDs.

In the future, we plan to switch all of the storage pods to one set of 60 units, and furthermore, we plan to switch to 3 TB / 4 TB HDDs even with larger capacity, so this number may change greatly.