Hi,

This is not exactly ZFS specific, but this still seems like a fruitful place to ask.

It occurred to me today that hot spares could sit in standby (spun down) until needed (I know ATA can do this, I'm supposing SCSI does too, but I haven't looked at a spec recently). Does anybody do this? Or does everybody do this already?

Does the tub curve (chance of early life failure) imply that hot spares should be burned in, instead of sitting there doing nothing from new? Just like a data disk, seems to me you'd want to know if a hot spare fails while waiting to be swapped in. Do they get tested periodically?

--Toby
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