[smeyer]

Is the 80% sampling a variety of manufacturers and batches, or a single batch of drives that were all ordered at the same time from the same manufacturer? If the latter, I'd suspect it's more of a realization that you got a flawed batch of drives (which is a real risk to manage, but not universal).

[ramraj07]

It's a variety of sizes and companies spanning 8 years. And we were talking about 100ish drives. Basically we realised our entire lab backup was useless.

[jamesfinlayson]

I think a data centre company posted some findings on this recently.