Can WAL and the swap partition be on the same drive?
Thanks
Chad
----- Original Message -----
From: "Josh Berkus" <josh@agliodbs.com>
To: "Chad Thompson" <chad@weblinkservices.com>; "pgsql-performance"
<pgsql-performance@postgresql.org>
Sent: Friday, May 02, 2003 2:10 PM
Subject: Re: [PERFORM] Looking for a cheap upgrade (RAID)
Chad,
> I realize that Im a raid on linux newbie so any suggestions are
appreciated.
> Im thinking I want to put this on an IDE Raid array, probably 0+1. IDE
seems
> to be cheap and effective these days.
> What ive been able to glean from other postings is that I should have 3
> drives, 2 for the database w/ striping and another for the WAL.
Well, RAID 0+1 is only relevant if you have more than 2 drives. Otherwise,
it's just RAID 1 (which is a good choice for PostgreSQL).
More disks is almost always better. Putting WAL on a seperate (non-RAID)
disk
is usually a very good idea.
> I would also appreciate raid hardware suggestions (brands, etc)
> And as always im not afraid to RTFM if someone can point me to the FM :-)
Use Linux Software RAID. To get hardware RAID better than Linux Software
RAID, you have to spend $800 or more.
--
-Josh Berkus
Aglio Database Solutions
San Francisco
