Poweredge 1800 CERC Sata raid performance

John Hodrien johnh at comp.leeds.ac.uk
Wed Oct 11 12:10:58 CDT 2006


On Wed, 11 Oct 2006, Sturgis, Grant wrote:

> I have a case open with Dell tech support on this very issue.
> Horrendous performance with this card in RAID 5.  Not only slow IO
> performance, but the load average of the system goes through the roof
> rendering the system unusable.
>
> So far, the feedback from Dell tech support is that this is expected.
> This is not a performance card.
>
> The truth of the matter is that it is unusable (in RAID 5) and the
> marketing of the card is an outright lie.

Yes, that's my experience too.  I assume a switch to RAID 1 would give you the
performance back (a switch I'm looking to make ASAP).

jh

-- 
"God is really only another artist.  He invented the giraffe, the elephant and
  the cat.  He has no real style, He just goes on trying other things."
                                                      -- Pablo Picasso



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