From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Scobie <richard@sauce.co.nz>
Subject: Re: shared spare
Date: Sun, 12 Feb 2006 16:29:53 +1300
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Bill Davidsen wrote:
> One of the things I like about the IBM ServeRAID controller is spare 
> drive shared between two RAID groups. First to fail gets it. For 
> software RAID is this at all in the future?

Hi Bill,

Unless I am misunderstanding something, software RAID has this already.
I have not used it but reading from the mdadm man page in the "Monitor
Mode" section:

"As  well  as  reporting  events, mdadm may move a spare drive from one
array to another if they are in the same spare-group and if the
destination array has a failed drive but not spares."

Regards,

Richard