"Steinmetz, Paul" <PSteinmetz@xxxxxxxxxx> wrote on Tue, 04 Feb
2014 18:37:00 GMT:

I thought you needed a hot spare for each Raid set, or is
that not correct.

Minimum of 1 hot spare per adapter (SCSI and PCI-x SAS) or
adapter pair (PCIe SAS adapters) for RAID5 protection.

Mirroring hot spare works differently and you could get by with
just 1 drive designated as the hot spare for the whole ASP. I
recommend 1 spare drive per loop to give best odds of
maintaining loop level mirroring.

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