From owner-freebsd-isp Thu Dec 17 19:13:00 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id TAA03168 for freebsd-isp-outgoing; Thu, 17 Dec 1998 19:13:00 -0800 (PST) (envelope-from owner-freebsd-isp@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 TAA03135 for ; Thu, 17 Dec 1998 19:12:37 -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 NAA13062; Fri, 18 Dec 1998 13:42:09 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id NAA12044; Fri, 18 Dec 1998 13:41:59 +1030 (CST) Message-ID: <19981218134159.S486@freebie.lemis.com> Date: Fri, 18 Dec 1998 13:41:59 +1030 From: Greg Lehey To: Dan Swartzendruber Cc: Matthew Patton , freebsd-isp@FreeBSD.ORG Subject: Re: RAID solutions? References: <3.0.5.32.19981217220152.009c6100@mail.kersur.net> <3.0.5.32.19981215231329.00966ae0@mail.kersur.net> <19981218131434.M486@freebie.lemis.com> <3.0.5.32.19981217220152.009c6100@mail.kersur.net> <19981218133502.Q486@freebie.lemis.com> <3.0.5.32.19981217220842.009d5cf0@mail.kersur.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <3.0.5.32.19981217220842.009d5cf0@mail.kersur.net>; from Dan Swartzendruber on Thu, Dec 17, 1998 at 10:08:42PM -0500 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-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Thursday, 17 December 1998 at 22:08:42 -0500, Dan Swartzendruber wrote: > At 01:35 PM 12/18/98 +1030, Greg Lehey wrote: >> On Thursday, 17 December 1998 at 22:01:52 -0500, Dan Swartzendruber wrote: >>> >>> Greg, are there any performance ramifications with RAID5? When not in >>> degraded mode, of course... >> >> Yes, big ones. Every write in normal mode requires at least one >> additional I/O to the parity block. > > That's what I wondered about. Probably not worth it for a news spool... It depends. Matthew was recommending RAID-1 (mirroring). That requires significantly more disk. If you are concerned about the integrity of your news spool, you have the choice between RAID-5 and RAID-1. 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-isp" in the body of the message