From owner-freebsd-fs Fri Nov 6 15:52:03 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA24052 for freebsd-fs-outgoing; Fri, 6 Nov 1998 15:52:03 -0800 (PST) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id PAA24026 for ; Fri, 6 Nov 1998 15:51:59 -0800 (PST) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id KAA01520; Sat, 7 Nov 1998 10:21:45 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id KAA00811; Sat, 7 Nov 1998 10:21:45 +1030 (CST) Message-ID: <19981107102145.G499@freebie.lemis.com> Date: Sat, 7 Nov 1998 10:21:45 +1030 From: Greg Lehey To: enkhyl@hayseed.net, Bagnara Stefano Cc: freebsd-fs@FreeBSD.ORG Subject: Re: RAID1 Software vs Hardware References: <008e01be09a3$88e06880$0f63b1c2@lust.datasail.it> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: ; from Christopher Nielsen on Fri, Nov 06, 1998 at 01:35:51PM -0800 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 X-Mutt-References: Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org [Format autorecovered at freebie.lemis.com] On Friday, 6 November 1998 at 13:35:51 -0800, Christopher Nielsen wrote: > On Fri, 6 Nov 1998, Bagnara Stefano wrote: > >> Date: Fri, 6 Nov 1998 17:35:58 +0100 >> From: Bagnara Stefano >> To: freebsd-fs@FreeBSD.ORG >> Subject: RAID1 Software vs Hardware >> >> I don't know if this is the correct list (sorry if not), anyway: I >> need to implement a simple raid1 with 2 9gigs SCSI HDD. I need a >> inexpensive solution ... so i was thinking about a software raid1. >> Is it possible? is it too slow? > > Your really not going to see very good performance with RAID if you're > using only two spindles (i.e., discs). You might want to try going with 4 > 4G discs, if possible. The question of performance is directly related to > exactly how much I/O you're going to be shoving through the discs. "Only a > mail server" doesn't really provide enough information, IMHO. The question was about RAID-1 (mirroring), which is more related to availability than performance. You only need additional disks if you need more than one disk's worth of data. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message