| From: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
|---|---|
| To: | Jeff Frost <jeff(at)frostconsultingllc(dot)com> |
| Cc: | Bucky Jordan <bjordan(at)lumeta(dot)com>, Luke Lonergan <llonergan(at)greenplum(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: availability of SATA vendors |
| Date: | 2006-11-22 17:09:50 |
| Message-ID: | 1164215390.2868.26.camel@localhost.localdomain |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
On Wed, 2006-11-22 at 09:02 -0800, Jeff Frost wrote:
> On Wed, 22 Nov 2006, Joshua D. Drake wrote:
>
> >> I could only find the 6 disk RAID5 numbers in the archives that were run with
> >> bonnie++1.03. Have you run the RAID10 tests since? Did you settle on 6 disk
> >> RAID5 or 2xRAID1 + 4XRAID10?
> >
> > Why not 6 drive raid 10? IIRC you need 4 to start RAID 10 but only pairs
> > after that.
>
> A valid question. Does the caching raid controller negate the desire to
> separate pg_xlog from PGDATA?
There is a point where the seperate pg_xlog does not help with RAID 10.
Where that point is, entirely depends on your database usage :)
Sincerely,
Joshua D. Drake
>
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