Re: Hardware for PostgreSQL - Mailing list pgsql-performance

From Magnus Hagander
Subject Re: Hardware for PostgreSQL
Date
Msg-id 472985B5.6010701@hagander.net
Whole thread Raw
In response to Re: Hardware for PostgreSQL  (Ow Mun Heng <Ow.Mun.Heng@wdc.com>)
Responses Re: Hardware for PostgreSQL  (Steve Crawford <scrawford@pinpointresearch.com>)
List pgsql-performance
Ow Mun Heng wrote:
>> You're likely better off (performance-wise) putting it on the same disk
>> as the database itself if that one has better RAID, for example.
>
> I'm thinking along the lines of since nothing much writes to the OS
> Disk, I should(keyword) be safe.

Unless it's *always* in the cache (not so likely), reads will also move
the heads...

In the situation you have, I'd put the xlog on the same disk as the data
- mainly because it gives you RAID on it in case the disk breaks.

//Magnus

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