[CentOS] OT: RAID5, RAID50 and RAID60 performance??
rswwalker at gmail.com
Tue Aug 18 18:20:00 UTC 2009
On Aug 18, 2009, at 2:05 PM, mcclnx mcc <mcclnx at yahoo.com.tw> wrote:
> We have several DELL servers with MD1000 connect to it. Server will
> install CENTOS 5.x X86_64 version. My questions are:
> 1. Which configuration have better performance RAID5, RAID50 or
RAID5 does one less IO per write as it doesn't have to write the extra
parity, but RAID50 is a little worse then RAID6 because it has to
calculate 2 parity blocks.
If doing RAID6 I'd probably create one large RAID6, once you get into
RAID60 it's probably just as well do RAID10.
> 2. how much performance difference?
That really depends on HW config, software config and workload.
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