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1. sillys+z[view] [source] 2022-07-08 20:34:23
>>tpmx+(OP)
HN was down because the failover server also failed: https://twitter.com/HNStatus/status/1545409429113229312

Double disk failure is improbable but not impossible.

The most impressive thing is that there seems to be no dataloss, almost whatsoever. Whatever the backup system is, it seems rock solid.

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2. davedu+b2[view] [source] 2022-07-08 20:41:05
>>sillys+z
> Double disk failure is improbable but not impossible.

It's not even improbable if the disks are the same kind purchased at the same time.

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3. spiffy+c7[view] [source] 2022-07-08 21:00:26
>>davedu+b2
Yep: if you buy a pair disks together, there's a fair chance they'll both be from the same manufacturing batch, which correlates with disk defects.
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4. sofixa+EJ1[view] [source] 2022-07-09 09:04:10
>>spiffy+c7
That's why serious SAN vendors take care to provide you a mix of disks (e.g. on a brand new NetApp you can see that disks are of 2-3 different types, and with quite different serial numbers).
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