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vol0 - RAID4 or RAID-DP ?

druddle00
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Hi all

I am interested to hear what people do for the RAID config for vol0/aggr0.  I have always left it as a 3 disk RAID-DP aggregate with vol0 on it.  Now disk sizes have got so big, is it a normal and recommended practice to use RAID4 for aggr0 so as not to lose another disk, as with 3 disks in the aggregate you dont really benefit from the "lots of spindles in the aggregate" idea.  I know DP protects against 2 disk failures in the aggregate, but its a decision against the likelihood of this happening, against losting potentially another 1 (or even 2) Tb disk.

Anyone have thoughts on this ?


Dave

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