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2006 Sep 17
2
ZFS layout on hardware RAID-5?
...groups consisting of those 5-9 LUN''s each. We gain some ZFS self-healing
here for block-level issues, but sacrifice some space (again, double
the single-layer RAID-5 space overhead). With two 6-LUN RAID-Z groups,
should be ~4000GB available space. With 9-LUN RAID-Z groups, ~4266GB.
(3) Three 4D+1P h/w RAID-5 groups, no hot spare, mapped to one LUN each.
Setup a ZFS pool of one RAID-Z group consisting of those three LUN''s.
Only ~3200GB available space, but what looks like very good resiliency
in face of multiple disk failures.
(4) Same three h/w RG'...