Chuck Swiger wrote:
No. All of the drives need to be the same size. With RAID-5, which drive is used to hold parity data rotates on a stripe-by-stripe basis to balance out the load.
Just to clarify this point. All the subdisks in the plex need to be the same size. The physical drives and even the bsd partitions/vinum drives do not actually have to be the same.
An example would be you have 2x 40gig partitions, and 2x 60 gig partitions. You could make a stripe set using 4 40gig (160gig) subdisks (or a 120gig raid 5 set). You just would't use the remaining 20 gig on the other two drives. You could use the space, just not for this plex. (you could create a 40gig (20+20) stripe or concat set or a mirrored 20gig area) Concat, on the other hand doesn't care and would happily use 40+40+60+60 (just not with the same perf levels)
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