From owner-freebsd-questions@FreeBSD.ORG Sun Feb 4 01:48:17 2007 Return-Path: X-Original-To: questions@freebsd.org Delivered-To: freebsd-questions@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6A2FC16A402 for ; Sun, 4 Feb 2007 01:48:17 +0000 (UTC) (envelope-from jgrosch@juniper.net) Received: from borg.juniper.net (borg.juniper.net [207.17.137.119]) by mx1.freebsd.org (Postfix) with ESMTP id 3B60D13C47E for ; Sun, 4 Feb 2007 01:47:45 +0000 (UTC) (envelope-from jgrosch@juniper.net) Received: from unknown (HELO gamma.jnpr.net) ([172.24.245.25]) by borg.juniper.net with ESMTP; 03 Feb 2007 17:18:24 -0800 X-IronPort-AV: i="4.13,277,1167638400"; d="scan'208"; a="668982526:sNHT34220200" Received: from emailsmtp55.jnpr.net ([172.24.18.132]) by gamma.jnpr.net with Microsoft SMTPSVC(6.0.3790.1830); Sat, 3 Feb 2007 17:18:25 -0800 Received: from odin.juniper.net ([172.24.115.43]) by emailsmtp55.jnpr.net with Microsoft SMTPSVC(6.0.3790.1830); Sat, 3 Feb 2007 17:18:24 -0800 Received: by odin.juniper.net (Postfix, from userid 200) id 711D7A6D67; Sat, 3 Feb 2007 17:18:24 -0800 (PST) Date: Sat, 3 Feb 2007 17:18:24 -0800 From: Josef Grosch To: Ted Mittelstaedt Message-ID: <20070204011824.GA34372@juniper.net> References: <6C0CF58A187DA5479245E0830AF84F421D17A9@poweredge.attiksystem.ch> <004b01c747b7$7606c190$3c01a8c0@coolf89ea26645> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <004b01c747b7$7606c190$3c01a8c0@coolf89ea26645> User-Agent: Mutt/1.4.2.2i Organization: Juniper Networks X-OriginalArrivalTime: 04 Feb 2007 01:18:24.0673 (UTC) FILETIME=[5DEFA110:01C747FA] Cc: Philippe Lang , questions@freebsd.org, jgrosch@MooseRiver.com Subject: Re: Fast SCSI RAID controller X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: jgrosch@juniper.net List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Feb 2007 01:48:17 -0000 On Sat, Feb 03, 2007 at 09:19:27AM -0800, Ted Mittelstaedt wrote: > he still ought to look at them, cheaper faster disk arrays are nothing > to sneeze at. > > SCSI is only a win these days if your running the most expensive 10K > RPM drives in a mirrored configuration, which is common on database > servers. And raid-5 in particular unless you have a minimum of 5 drives > in your array, you are going to just be throwing the performance edge > of the more expensive scsi drives into the toilet, so what is the point of > buying them? > > If your doing raid 5 for redundancy, there's no argument, sata is the > clear winner on the 3ware or highpoint cards. > > Ted This system is going to be a testbuild server to answer the question, "Will this commit break the build?" It needs to be really fast. I'm looking at 15K RPM drives most likley either RAID 10 or RAID 0. Most of our systems that have local disk are RAID 10. We have used SCSI disks becuase they are fast and reliable. For data that we can not loose we use NetApps either attached via Gige copper or fiber. Josef -- FreeBSD 6.2 | Josef Grosch | Listen, strange women lying in ponds distributing jgrosch@juniper.net | swords is no basis for a system of government.