From owner-freebsd-hackers Fri Nov 28 20:17:59 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id UAA01580 for hackers-outgoing; Fri, 28 Nov 1997 20:17:59 -0800 (PST) (envelope-from owner-freebsd-hackers) Received: from mother.sneaker.net.au (akm@mother.sneaker.net.au [203.30.3.2]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id UAA01450 for ; Fri, 28 Nov 1997 20:14:57 -0800 (PST) (envelope-from akm@mother.sneaker.net.au) Received: (from akm@localhost) by mother.sneaker.net.au (8.8.5/8.8.5) id PAA23032; Sat, 29 Nov 1997 15:22:12 +1100 (EST) From: Andrew Kenneth Milton Message-Id: <199711290422.PAA23032@mother.sneaker.net.au> Subject: Re: Drive Mirroring To: jamil@trojanhorse.ml.org (Jamil J. Weatherbee) Date: Sat, 29 Nov 1997 15:22:12 +1100 (EST) Cc: asami@cs.berkeley.edu, hackers@FreeBSD.ORG In-Reply-To: from "Jamil J. Weatherbee" at Nov 28, 97 07:31:11 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk +-----[ Jamil J. Weatherbee ]------------------------------ | | | Would a software RAID implementation be able to cope with having a drive | removed? The last implementation I saw of software RAID on Solaris didn't (about two years ago). It wouldn't boot from the secondary drives, it wouldn't run if one of the disks were missing, it wouldn't gracefully continue if the second drive died. It would mirror to the second drive, but, that's about it. It wouldn't re-synch the disks correctly either when you finally got around to replacing one of them. (The primary disk always had to be the current one, so if it died, you had to swap the ID on that, and add in a new one as the secondary). I haven't seen if it got any better since then, and I haven't had any experiences with any other RAID packages, so I don't know what else is out there. -- ,-_|\ SneakerNet | Andrew Milton | GSM: +61(41)6 022 411 / \ P.O. Box 154 | akm@sneaker.net.au | Fax: +61(2) 9746 8233 \_,-._/ N Strathfield +--+----------------------+---+ Ph: +61(2) 9746 8233 v NSW 2137 | Low cost Internet Solutions |