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2006 Sep 17
2
ZFS layout on hardware RAID-5?
...Some options we''re considering with ZFS are:
(0) One 13D+1P h/w RAID-5 group, one hot-spare, configured as 5-9 LUN''s.
Setup ZFS pool of one RAID-Z group from all those LUN''s. With a
6-LUN RAID-Z group should have ~4333GB available space (9-LUN group
gives ~4622GB). Some block-level recovery available, but an extra
helping of RAID-Z space overhead is lost.
(1) Two 6D+1P h/w RAID-5 groups, configured as 1 LUN each. Run a simple
stripe ZFS pool consisting of those two LUN''s. The "con" here is that
there is no ZFS self-healing...