On Jan 12, 2011, at 5:45 PM, Wim van den Berge wrote: > I have a pile of aging Dell MD-1000's laying around that have been replaced > by new primary storage. I've been thinking of using them to create some > archive/backup storage for my primary ZFS systems. > > Unfortunately they do not all contain identical drives. Some of the older > MD-1000's have 15x500GB drives, some have all 750's some all 1TB's. Since > size and integrity matters here, not speed. I was thinking of creating one > large pool containing multiple RAIDZ2's. Each RAIDZ2 would be one MD-1000 and > would have 14 drives, reserving one drive per shelf as a spare.
If you are going to put all drives in a shelf into a single vdev, then it will be better to use raidz3 than raidz2+spare. > > The question is: The final pool would have spares of 500GB, 750GB and 1TB. Is > ZFS smart enough to pick the right one if a drive fails? If not, is there a > way to make this scenario work and still combine all available storage in a > single pool? Use warm spares instead of hot spares, or raidz3. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
