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by sounds 4285 days ago
You definitely don't want to use drives from the same manufacturing run (batch) on the same array, since they are the most likely to fail all at the same time.

Second to that, you probably don't want to go single-source for your drives -- maybe use Hitachi with a mix of WD.

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> Second to that, you probably don't want to go single-source for your drives -- maybe use Hitachi with a mix of WD.

Can you explain why not?

Because then a single firmware bug could wipe you out. Once the drives all hit 4500 hours or 700 bad blocks or some other trigger, they die. It's happened before.

Could also be caused by bad grease, or shoddy bearings, or pretty much anything.

There is security in diversity.