Me, I'd *never) allow RAID-5 for data I cared abut.
Among other references, see <http://www.miracleas.com/BAARF/RAID5_versus_RAID10.txt>
(sorry for top-posting -- challenged reader and no other content to add)
Greg Williamson
Senior DBA
DigitalGlobe
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-----Original Message-----
From: pgsql-performance-owner@postgresql.org on behalf of Mario Weilguni
Sent: Wed 12/10/2008 4:29 AM
To: Aidan Van Dyk
Cc: Joshua D. Drake; Scott Marlowe; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Experience with HP Smart Array P400 and SATA drives?
Aidan Van Dyk schrieb:
> * Joshua D. Drake <jd@commandprompt.com> [081209 11:01]:
>
>
>> Yes the SmartArray series is quite common and actually know to perform
>> reasonably well, in RAID 10. You still appear to be trying RAID 5.
>>
>
> *boggle*
>
> Are people *still* using raid5?
>
> /me gives up!
>
>
Why not? I know it's not performing as good as RAID-10, but it does not
waste 50% diskspace. RAID-6 is no option, because the performance is
even worse. And, on another system with RAID-5 + spare and SAS drives,
the same controller is working very well.
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