From fork-admin@xent.com Tue Sep 17 11:30:12 2002 Return-Path: Delivered-To: yyyy@localhost.example.com Received: from localhost (jalapeno [127.0.0.1]) by jmason.org (Postfix) with ESMTP id 8ABEC16F03 for ; Tue, 17 Sep 2002 11:30:11 +0100 (IST) Received: from jalapeno [127.0.0.1] by localhost with IMAP (fetchmail-5.9.0) for jm@localhost (single-drop); Tue, 17 Sep 2002 11:30:11 +0100 (IST) Received: from xent.com ([64.161.22.236]) by dogma.slashnull.org (8.11.6/8.11.6) with ESMTP id g8H9JaC03588 for ; Tue, 17 Sep 2002 10:19:37 +0100 Received: from lair.xent.com (localhost [127.0.0.1]) by xent.com (Postfix) with ESMTP id AB2CD2940D8; Tue, 17 Sep 2002 02:16:04 -0700 (PDT) Delivered-To: fork@example.com Received: from venus.phpwebhosting.com (venus.phpwebhosting.com [64.29.16.27]) by xent.com (Postfix) with SMTP id 7132229409F for ; Tue, 17 Sep 2002 02:15:25 -0700 (PDT) Received: (qmail 24536 invoked by uid 508); 17 Sep 2002 09:18:40 -0000 Received: from unknown (HELO hydrogen.leitl.org) (217.80.40.43) by venus.phpwebhosting.com with SMTP; 17 Sep 2002 09:18:40 -0000 Received: from localhost (eugen@localhost) by hydrogen.leitl.org (8.11.6/8.11.6) with ESMTP id g8H9IXY03200; Tue, 17 Sep 2002 11:18:33 +0200 X-Authentication-Warning: hydrogen.leitl.org: eugen owned process doing -bs From: Eugen Leitl To: "Stephen D. Williams" Cc: Gary Lawrence Murphy , Udhay Shankar N , Adam Rifkin , Subject: Re: storage bits In-Reply-To: <3D8684B4.7060801@lig.net> Message-Id: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: fork-admin@xent.com Errors-To: fork-admin@xent.com X-Beenthere: fork@example.com X-Mailman-Version: 2.0.11 Precedence: bulk List-Help: List-Post: List-Subscribe: , List-Id: Friends of Rohit Khare List-Unsubscribe: , List-Archive: Date: Tue, 17 Sep 2002 11:18:33 +0200 (CEST) X-Spam-Status: No, hits=-11.2 required=7.0 tests=AWL,EMAIL_ATTRIBUTION,IN_REP_TO,KNOWN_MAILING_LIST, QUOTED_EMAIL_TEXT,SPAM_PHRASE_01_02,USER_AGENT_PINE, X_AUTH_WARNING version=2.50-cvs X-Spam-Level: On Mon, 16 Sep 2002, Stephen D. Williams wrote: > To make what work? I already pointed out that a single drive is > comparable between IDE/SCSI. Alas, that's wrong. Both the drives are faster (10..15 krpm vs. ~7 krpm, faster seek), and the EIDE protocol is ridiculously dumb (queing; disconnect). > I think you're wrong with recent releases. I'll check this week. > There's also JFS and XFS. None of them are production quality. Right now only ext2 and ext3 qualify. It will take a good while (a year, or two) before we can trust anything else. > >SCSI has got advantages still, particular if it comes to off-shelf > >high-density racks. > > > Check out RaidZone.com. Have you looked inside a dual-CPU 1U Dell? Three drives are easy to get in. Anything else would require a redesign, and would in nontrivial thermal engineering issues. > A number of vendors are putting the Promise IDE hardware on the > motherboard. All that remains is the proper drive socket. I can't think of a single major vendor who sells 1U systems with hardware EIDE RAID. > Additionally, you can get hardware IDE raid as a pair of drive bays or > even an IDE-IDEx2 controller that can be screwed into a 1U chassis. I believe you that stuff can be found, if one is looking for it. However, I wouldn't put this into production unless I've had that system hanging in the local rack under simulated load for a half a year.