X-Original-To: pgsql-general-postgresql.org@localhost.postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id 99B359FA32D; Wed, 10 May 2006 09:15:36 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 85938-09; Wed, 10 May 2006 09:15:27 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- X-Greylist: from auto-whitelisted by SQLgrey- Received: from suzuka.mcnaught.org (unknown [4.21.254.118]) by postgresql.org (Postfix) with ESMTP id 4D12B9FA2FA; Wed, 10 May 2006 09:15:24 -0300 (ADT) Received: by suzuka.mcnaught.org (Postfix, from userid 1000) id 8598C167A05; Wed, 10 May 2006 08:15:22 -0400 (EDT) To: Greg Stark Cc: Vivek Khera , "Pgsql-Performance ((E-mail))" , PostgreSQL General Subject: Re: Arguments Pro/Contra Software Raid References: <473FC220-A52C-4954-81E9-A14ED33164C2@blighty.com> <4460BA8B.7010600@commandprompt.com> <5AF87D32-F602-4973-AA21-84E0CFEA1774@khera.org> <87mzdroyzb.fsf@suzuka.mcnaught.org> <8764kexzin.fsf@stark.xeocode.com> From: Douglas McNaught Date: Wed, 10 May 2006 08:15:22 -0400 In-Reply-To: <8764kexzin.fsf@stark.xeocode.com> (Greg Stark's message of "10 May 2006 00:41:20 -0400") Message-ID: <87vesenkit.fsf@suzuka.mcnaught.org> User-Agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200605/422 X-Sequence-Number: 95214 Greg Stark writes: > Douglas McNaught writes: >> Correct me if I'm wrong, but I've never heard of a 15kRPM SATA drive. > > Well, dollar for dollar you would get the best performance from slower drives > anyways since it would give you more spindles. 15kRPM drives are *expensive*. Depends on your power, heat and rack space budget too... If you need max performance out of a given rack space (rather than max density), SCSI is still the way to go. I'll definitely agree that SATA is becoming much more of a player in the server storage market, though. -Doug