![]() ![]() The executive told Ars that years of data collection like this have taught Backblaze that the failure rate of a given model does not predict the failure rate of other models of the same size or by the same manufacturer: And looking at the chart below, the lines for the 10 and 8TB models stand out: Advertisement By using the average age by drive size, we can, as appropriate, replace/upgrade all of the drives in a vault at once.Īfter eliminating drives that Backblaze considered young (under 5 years old), Backblaze came up with the below line graph, homing in on quarterly AFRs for its 4, 6, 8, and 10TB HDDs. Then, a year from now, we’d do it again, and the year after that, etc. If we grouped the drives strictly by age and wanted to replace just the oldest drives in a given Backblaze vault, we would only replace those drives in the vault that met the old age criteria, not all the drives. ![]() This is because, as Klein explained to Ars:Ī Backblaze storage vault consists of 1,200 drives of the same size, with 60 drives in 20 storage servers. So, Klein started digging further by grouping the drives by capacity. Since quarterly AFR numbers are "volatile," Klein told Ars Technica, Backblaze further evaluates both quarter-to-quarter and lifetime trends "to see if what happened was an anomaly or something more." Of course, that AFR increase alone isn't enough to warrant any panic. Backblaze's Q1 dataset examined 237,278 HDDs across 30 models. One of the biggest revelations from examining the drives from April 1, 2023, through June 30, 2023, was an increase in AFR from Q1 2023 (1.54 percent) to Q2 2023 ( 2.28 percent). ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |