From owner-freebsd-isp@FreeBSD.ORG Fri Aug 27 11:40:31 2004 Return-Path: Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B3E5016A4CE for ; Fri, 27 Aug 2004 11:40:31 +0000 (GMT) Received: from MailGate.wcasd.k12.pa.us (mailgate.wcasd.k12.pa.us [204.108.148.211]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5448343D2D for ; Fri, 27 Aug 2004 11:40:31 +0000 (GMT) (envelope-from cross@wcasd.k12.pa.us) Received: from localhost.wcasd.k12.pa.us (localhost.wcasd.k12.pa.us [127.0.0.1]) by MailGate.wcasd.k12.pa.us (Postfix) with ESMTP id 9E33A8C8D1 for ; Fri, 27 Aug 2004 06:39:32 -0400 (EDT) Received: from MailGate.wcasd.k12.pa.us (localhost.wcasd.k12.pa.us [127.0.0.1])46212-0E6CF821; Fri, 27 Aug 2004 06:39:30 -0400 Received: from sabmsx02.wcasd.k12.pa.us (unknown [10.220.2.102]) by MailGate.wcasd.k12.pa.us (Postfix) with ESMTP id 5A9DD8C8E8 for ; Fri, 27 Aug 2004 06:39:29 -0400 (EDT) Received: from sabmsx01.wcasd.k12.pa.us ([10.220.2.103]) by sabmsx02.wcasd.k12.pa.us with Microsoft SMTPSVC(6.0.3790.0); Fri, 27 Aug 2004 07:32:17 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Date: Fri, 27 Aug 2004 07:32:17 -0400 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Performance RAID setup... Thread-Index: AcSLqWEQxLdXer5oROGXbIkjkLY7cQAf4bkQ From: "Ross, Chris" To: X-OriginalArrivalTime: 27 Aug 2004 11:32:17.0188 (UTC) FILETIME=[81C42640:01C48C29] X-AntiVirus: checked by Vexira MailArmor (version: 2.0.1.14; VAE: 6.27.0.6; VDF: 6.27.0.35; host: MailGate.wcasd.k12.pa.us) Subject: RE: Performance RAID setup... X-BeenThere: freebsd-isp@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Internet Services Providers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Aug 2004 11:40:31 -0000 There are also some potential thermal issues with the 73Gig 15,000 RPM drives. It has been a while but the last time I spoke with EMC they said that they wouldn't ship 15,000 RPM drives until they stopped bursting into flame during test. Kind of gives a whole new meaning to burn in. > Mitch (bitblock) wrote: > [ ... ] > > > One floating consideration is the hard drive configuration and > > the relative performance. > > > > I could go with 6 73GB 15000 RPM drives in two RAID 5 sets, or I > > could go with 6 146GB 10000RPM drives in RAID mirrors. > > > > The goal is to provide a NFS / SAMBA server for 4 - 20 > > application servers. > > > > Anyone have any value for dollar comments? > > Unless your volumes are read-only, or close to it, RAID-10 (or > "-1,0") will give you significantly better write performance than > RAID-5. You might also give small SAN devices a thought; in > particular, the Xserve RAID box has a very good price/performance > point. > > I don't have experience with the SRCU42L SCSI controller, so you > might want to do a search about it and FreeBSD, and/or ask your > vendor. Of course the Xserve RAID is IDE drives only to the best of my=20 knowledge. ;) --=20 Thanks, Josh Paetzel _______________________________________________ freebsd-isp@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-isp To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"