| From: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
|---|---|
| To: | "Franck Routier" <franck(dot)routier(at)axege(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: 12 disks raid setup |
| Date: | 2008-02-29 14:13:12 |
| Message-ID: | dcc563d10802290613v482f52dr43ea95b52886de31@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-performance |
On Fri, Feb 29, 2008 at 5:51 AM, Franck Routier
<franck(dot)routier(at)axege(dot)com> wrote:
> Hi,
>
> I am in the process of setting up a postgresql server with 12 SAS disks.
>
> I am considering two options:
>
> 1) set up a 12 disks raid 10 array to get maximum raw performance from
> the system and put everything on it (it the whole pg cluster, including
> WAL, and every tablespcace)
>
> 2) set up 3 raid 10 arrays of 4 disks, and dispatch my data on these
> disks via tablespaces :
How you set it up depends on your RAID controller as much as anything.
Good battery backed RAID controllers seem to work better with one big
RAID-10 array. But as with anything, unless you benchmark it, you're
really just guessing which is best.
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