From owner-freebsd-database Sun Apr 14 12:18:16 2002 Delivered-To: freebsd-database@freebsd.org Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by hub.freebsd.org (Postfix) with ESMTP id 88F1037B405 for ; Sun, 14 Apr 2002 12:18:14 -0700 (PDT) Received: by elvis.mu.org (Postfix, from userid 1061) id 5CB79AE1D1; Sun, 14 Apr 2002 12:18:14 -0700 (PDT) Date: Sun, 14 Apr 2002 12:18:14 -0700 From: David Drum To: FreeBSD DB List Subject: Re: Raid configuration Message-ID: <20020414191814.GC40226@elvis.mu.org> Mail-Followup-To: David Drum , FreeBSD DB List References: <20020411235022.GA21045@elvis.mu.org> <20020412120947.Q48494-100000@mail.wolves.k12.mo.us> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20020412120947.Q48494-100000@mail.wolves.k12.mo.us> User-Agent: Mutt/1.3.27i Sender: owner-freebsd-database@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Quoth Chris Dillon: > And when you only have a four-drive configuration, it makes no > difference which one you use since the chances of a total failure > is exactly the same either way. Any more drives than that and you > definately want RAID10. :-) The chances of total failure may be the same, but the effort required to rebuild the RAID is not. If you have 4 9GB disks in a RAID 0+1 and one goes bad, you have to mirror 18GB once the drive is replaced. If you have a RAID 1+0, you only have one drive to mirror, and not a stripe. So RAID 1+0 has clear advantages even in the minimal implementation. Regards, David Drum david@mu.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-database" in the body of the message