From: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
---|---|
To: | Clodoaldo <clodoaldo(dot)pinto(dot)neto(at)gmail(dot)com> |
Cc: | "PostgreSQL General ML" <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Disk arrangement in a cheap server |
Date: | 2007-11-24 15:12:14 |
Message-ID: | dcc563d10711240712o60ce4149h96f7fb421989a2fa@mail.gmail.com |
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Lists: | pgsql-general |
On Nov 24, 2007 5:09 AM, Clodoaldo <clodoaldo(dot)pinto(dot)neto(at)gmail(dot)com> wrote:
> I will build a cheap server and I'm in doubt about what would the the
> best for performance:
>
> 1 - everything in one lonely fast 10,000 rpm Raptor HD;
>
> 2 - two cheap 7,200 rpm 16MB cache HDs like this:
>
> disk 1 - system and pg_xlog
> disk 2 - pg_data without pg_xlog
> or a better arrange suggested by you;
>
> 3 - The two cheap HDs above in Raid 0.
From a DBA perspective, none of those seem like a good choice, as
there's no redundancy.
I'd make the two 7200 RPM drives a RAID-1 and have some redundancy so
a single disk failure wouldn't lose all my data. then I'd start
buying more drives and a good RAID controller if I needed more
performance.
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