Sep 27, 2023 17:00:00

'Which SSD is hard to break?' BackBlaze, which manages 3144 SSDs, releases 'Statistical data by manufacturer and model 2023 mid-term review SSD version'

BackBlaze , which operates a cloud storage service, regularly publishes reports summarizing the failure status of HDDs and SDDs managed by the company. On September 26, 2023, the 2023 interim report version of the report, which summarizes SSD failure status by model, was released.

The SSD Edition: 2023 Drive Stats Mid-Year Review
https://www.backblaze.com/blog/ssd-edition-2023-mid-year-drive-stats-review/

As of June 30, 2023, BackBlaze operates 3144 SSDs as boot drives for cloud storage servers. Each SSD is used for 'system startup', 'storing log files and temporary files', etc., and reads, writes, and deletes are performed every day depending on the server's activity status.

Below is a table summarizing the SSD failure status for the first quarter of 2023 (January to March). 2 units of Crucial's ' CT250MX500SSD1 ', 1 unit of Micron's 'MTFDDAV240TCB', 1 unit of Seagate's 'SSDSCKKB240GZR', 1 unit of Seagate's ' ZA250CM10003 ', 1 unit of Western Digital's ' WD Blue SA510 2.5 ', Western One of Digital's ' WDS250G2B0A ' broke down. Among these, Seagate's 'SSDSCKKB240GZR' has a very high annualized failure rate (AFR) of 829.55%, but this means that 'If you operate two SSDSCKKB240GZRs, one of the two will fail immediately after starting operation. It is said that the large value was only achieved because the conditions for 'failure occurred' were met. BackBlaze points out that to properly evaluate the failure susceptibility of SSDs, it is necessary to prepare at least 100 units of the same model and operate them for a total of 10,000 days.

Below is a table summarizing the SSD failure status for the second quarter of 2023 (April to June). Two Crucial 'CT250MX500SSD1', two Seagate 'ZA250CM10002', and four Western Digital 'WDS250G2B0A' failed.

The graph below summarizes the annualized failure rate (AFR) by SSD manufacturer, with the blue bar showing the AFR for the entire period and the red bar showing the AFR for the most recent 60 days. BackBlaze notes that Micron's AFR for the past 60 days is noticeably high and points out that ``we need to dig deeper into the data behind the graph.''

Below is a table summarizing the failure status of SSDs from October 1, 2018 to June 30, 2023. At first glance, it seems that you can determine which SSDs are more likely to fail from the table, but since it also includes data with low reliability such as ``SSDs with a low number of units in operation'' and ``SSDs with a short operating period,'' It is not possible to determine which SSD is more likely to fail.

BackBlaze considers data with a confidence interval within 1% to be ``data suitable for determining the susceptibility of SSDs to failure.'' Below is a table created by focusing only on data whose confidence interval falls within 1%. Dell's 'DELLBOSS VD' has an annualized failure rate (AFR) of 0% and can be said to be a very hard-to-break SSD. However, DELLBOSS VD is difficult to obtain because it is not an SSD for general users.