From owner-freebsd-scsi Tue Feb 1 13:53:40 2000 Delivered-To: freebsd-scsi@freebsd.org Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by builder.freebsd.org (Postfix) with ESMTP id C85BB3F60 for ; Tue, 1 Feb 2000 13:53:35 -0800 (PST) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id IAA54565; Wed, 2 Feb 2000 08:23:07 +1030 (CST) Date: Wed, 2 Feb 2000 08:23:06 +1030 From: Greg Lehey To: Wilko Bulte Cc: "Justin T. Gibbs" , scsi@FreeBSD.ORG Subject: Re: hardware vs software stripping Message-ID: <20000202082306.T76348@freebie.lemis.com> References: <200001311432.HAA32638@narnia.plutotech.com> <20000131191957.A906@yedi.iaf.nl> <20000201190730.R76348@freebie.lemis.com> <20000201213108.A9984@yedi.iaf.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0pre2i In-Reply-To: <20000201213108.A9984@yedi.iaf.nl> WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF 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-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Tuesday, 1 February 2000 at 21:31:09 +0100, Wilko Bulte wrote: > On Tue, Feb 01, 2000 at 07:07:30PM +1030, Greg Lehey wrote: >> On Monday, 31 January 2000 at 19:19:57 +0100, Wilko Bulte wrote: >>> On Mon, Jan 31, 2000 at 07:32:31AM -0700, Justin T. Gibbs wrote: >>>> In article <20000131104827.A62824@freebie.lemis.com> you wrote: > > ... > >>> FWIW the Compaq HSx arrays try hard to distinguish full stripe >>> writes on RAID5 and switches to RAID3 behaviour. This is as Justin >>> says all on block level (or rather chunk level where a chunk is a >>> number of 512byte blocks). >> >> Well, see my other message. I'd like to call this RAID-4. But it's > > Compaq calls it adaptive RAID3/5. Whatever... I'm beginning to get the impression that a number of vendors are reinterpreting RAID levels. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message