From owner-freebsd-scsi@FreeBSD.ORG Mon Nov 28 05:20:26 2005 Return-Path: X-Original-To: freebsd-scsi@freebsd.org Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6E43716A41F for ; Mon, 28 Nov 2005 05:20:26 +0000 (GMT) (envelope-from user@dhp.com) Received: from shell.dhp.com (shell.dhp.com [199.245.105.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id DA8C343D46 for ; Mon, 28 Nov 2005 05:20:25 +0000 (GMT) (envelope-from user@dhp.com) Received: by shell.dhp.com (Postfix, from userid 896) id DA3F331307; Mon, 28 Nov 2005 00:20:24 -0500 (EST) Date: Mon, 28 Nov 2005 00:20:24 -0500 (EST) From: user To: "Kenneth D. Merry" In-Reply-To: <20051126231119.GA43846@nargothrond.kdm.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: freebsd-scsi@freebsd.org Subject: Re: configuration choices with Dell CERC (adaptec 2610SA) X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Nov 2005 05:20:26 -0000 On Sat, 26 Nov 2005, Kenneth D. Merry wrote: > > > It would be better to let the rebuild happen as fast as possible. Disks > > > have a bad habit of failing in groups, and you don't want to increase > > > the chance of a multi-disk failure by making recovery slow. > > > > So again ... only using mirrors ... and in a two-drive chassis, I can't > > have a hot spare, so I am not sure if it even really matters what I set > > that to ... comments ? > > If you only have a two drive chassis, your best bet is to replace a failed > drive as soon as you can and let the rebuild complete as soon as you can. This Dell CERC (adaptec 2610sa) is the first card I have seen with this rebuild-priority setting. Out of curiosity, of the three choices I have (low medium high), which choice approximates the behavior that the older cards (PERCs, etc.) had that _did not_ give you this choice ? Thanks so much for your (and everyone elses) great comments on this thread.