Received: from localhost (unknown [200.46.204.184]) by postgresql.org (Postfix) with ESMTP id B7B1D2E002D for ; Sat, 16 Feb 2008 02:08:36 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.184]) (amavisd-maia, port 10024) with ESMTP id 20040-02 for ; Sat, 16 Feb 2008 02:08:31 -0400 (AST) Received: from westnet.com (westnet.com [216.187.52.2]) by postgresql.org (Postfix) with ESMTP id 374032E0030 for ; Sat, 16 Feb 2008 02:08:33 -0400 (AST) Received: from westnet.com (localhost [127.0.0.1]) by westnet.com (8.14.0/8.14.0) with ESMTP id m1G68Q8T023914; Sat, 16 Feb 2008 01:08:26 -0500 (EST) Received: from localhost (gsmith@localhost) by westnet.com (8.14.0/8.13.2/Submit) with ESMTP id m1G68QO6023910; Sat, 16 Feb 2008 01:08:26 -0500 (EST) X-Authentication-Warning: westnet.com: gsmith owned process doing -bs Date: Sat, 16 Feb 2008 01:08:26 -0500 (EST) From: Greg Smith X-X-Sender: gsmith@westnet.com To: Bruce Momjian cc: pgsql-performance Subject: Re: Anyone using a SAN? In-Reply-To: <200802140323.m1E3N4U26014@momjian.us> Message-ID: References: <200802140323.m1E3N4U26014@momjian.us> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200802/190 X-Sequence-Number: 28732 On Wed, 13 Feb 2008, Bruce Momjian wrote: > Should this be summarized somewhere in our docs; just a few lines with > the tradeoffs, direct storage = cheaper, faster, SAN = more configurable? I think it's kind of stetching the PostgreSQL documentation to be covering that. It's hard to generalize here without giving a fair amount of background and caveats--that last message was about as compact a commentary on this as I could come up with. One of the things I was hoping to push into the community documentation one day was a larger look at disk layout than covers this, RAID issues, and related topics (this got started at http://www.postgresql.org/docs/techdocs.64 but stalled). What's nice about putting it into a web-only format is that it's easy to hyperlink heavily into the archives to recommend specific discussion threads of the issues for reference, which isn't practical in the manual. -- * Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD