Re: Re[2]: Raid5 Vs Raid0+1 -- Raw Vs Solaris 9 Concurrent Direct IO UFS
- From: Jared.Still@xxxxxxxxxxx
- To: edgar.chupit@xxxxx
- Date: Thu, 9 Sep 2004 14:36:33 -0700
> Unless I'm missing something than according to raid specs it doesn't
> mater how many disks are in raid5 array, you just need one additional
> disk for checksums, so in case of 6 spindle array you can create raid5
> that will operate according to your schema (it actually will be two
> raid5 arrays) or you can create one raid5 array that will use 5 disks
> for data and one disk for checksums.
>
> Please, correct me if I'm wrong.
>
It sounds to me like you are describing a RAID volume with dedicated
parity. If so, that is RAID 3.
RAID 5 has distributed parity.
RAID 1+0 has no parity. ;)
Jared
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