On Tue, 27 Apr 2010, David Dyer-Bennet wrote:

I don't think I understand your scenario here.  The docs online at
<http://docs.sun.com/app/docs/doc/819-5461/gazgd?a=view> describe uses of
zpool replace that DO run the array degraded for a while, and don't seem
to mention any other.

Could you be more detailed?

If a disk has failed, then it makes sense to physically remove the old disk, insert a new one, and do 'zpool replace tank c1t1d0'. However if the disk has not failed, then you can install a new disk in another location and use the two argument form of replace like 'zpool replace tank c1t1d0 c1t1d7'. If I understand things correctly, this allows you to replace one good disk with another without risking the data in your pool.

Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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