From owner-freebsd-fs Mon Nov 9 15:02:34 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA03800 for freebsd-fs-outgoing; Mon, 9 Nov 1998 15:02:34 -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 PAA03794 for ; Mon, 9 Nov 1998 15:02:31 -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 JAA15186; Tue, 10 Nov 1998 09:32:08 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id JAA17544; Tue, 10 Nov 1998 09:32:06 +1030 (CST) Message-ID: <19981110093206.Y499@freebie.lemis.com> Date: Tue, 10 Nov 1998 09:32:06 +1030 From: Greg Lehey To: Bagnara Stefano , FreeBSD filesystems Subject: Re: RAIDing freebsd.... References: <006c01be0bbf$76a42300$0f63b1c2@lust.datasail.it> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <006c01be0bbf$76a42300$0f63b1c2@lust.datasail.it>; from Bagnara Stefano on Mon, Nov 09, 1998 at 10:00:56AM +0100 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 Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Monday, 9 November 1998 at 10:00:56 +0100, Bagnara Stefano wrote: > This is the first time i get so many answer to a question in a mailing > list.... > many thanx to all... > > So let's sort the problems: > > 1. I need 8/10 gigs of useable space on the system and i'll try to get it > with software RAID: should be better to use 3 x 4gigs than 2 x 9 gigs (as my > original idea). After all your posts i concluded (sorry for my english) that > 3 x 4 gigs is less expensive and faster, but... is the software RAID > configuration the same? or with RAID3 it is more difficult than > RAID1? No software RAID-3 is available. Do you mean RAID-5? With RAID-5, even 3 disks is rather on the low side. 2 disks is too few: in this case, RAID-1 is a better option, but you lose 50% of the storage space. RAID-5 will lose one disk, so it's better to have a lot of disks. > 2. This is the first time i install FreeBSD. I used a lot linux before. Can > i set up the whole system with software RAID and get it to work anyway if > one disk fail? (as in HW RAID). Yes, with Vinum, but not with ccd. You need to reconfigure and reboot to recover from a ccd disk failure. > 3. Where can i find an hardware compatibility lists for RAID controllers? > i've read the Handbook but i only found classic SCSI cards. Any suggestion > about a specific controller? Currently DPT's the only game in town. 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