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> In fact, the reality is exactly backwards to what he has written here: with multiple terabytes of data on the array, a single drive failure results in a long,
by ValentineC 11y ago
> In fact, the reality is exactly backwards to what he has written here: with multiple terabytes of data on the array, a single drive failure results in a long, intensive rebuild process that can serve to hasten the failure of the remaining drives.
Are you talking about Unrecoverable Read Errors? [1]
[1] https://news.ycombinator.com/item?id=8306499 https://news.ycombinator.com/item?id=8306499
- rsync 11y agoI'm talking about any problem that a hard drive could have. One drive dies, and the response to that drive dying is to go beat the shit out of the remaining drives, and given their large size, that beating goes on for days (possibly). Yes, an unrecoverable read can be one failure mode, although not necessarily the scariest - you can often tell your raid hardware to ignore UREs and just rebuild anyway, hoping that the missing bits aren't crucial (which in the case of photo storage isn't that bad of a bet...).