From owner-freebsd-stable Tue May 28 17:16:28 2002 Delivered-To: freebsd-stable@freebsd.org Received: from wantadilla.lemis.com (wantadilla.lemis.com [192.109.197.80]) by hub.freebsd.org (Postfix) with ESMTP id 502D437B403 for ; Tue, 28 May 2002 17:16:21 -0700 (PDT) Received: by wantadilla.lemis.com (Postfix, from userid 1004) id 6EB5B812F7; Wed, 29 May 2002 09:46:19 +0930 (CST) Date: Wed, 29 May 2002 09:46:19 +0930 From: Greg 'groggy' Lehey To: Doug White Cc: Cy Schubert - CITS Open Systems Group , Kirk Strauser , freebsd-stable@FreeBSD.ORG Subject: Re: Hardware RAID vs vinum Message-ID: <20020529094619.E31668@wantadilla.lemis.com> References: <20020528095948.D16567@wantadilla.lemis.com> <20020528130308.A71519-100000@resnet.uoregon.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20020528130308.A71519-100000@resnet.uoregon.edu> User-Agent: Mutt/1.3.23i Organization: The FreeBSD Project Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.FreeBSD.org/ X-PGP-Fingerprint: 9A1B 8202 BCCE B846 F92F 09AC 22E6 F290 507A 4223 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tuesday, 28 May 2002 at 13:04:19 -0700, Doug White wrote: > On Tue, 28 May 2002, Greg 'groggy' Lehey wrote: > >> This can only happen if there's something very wrong with the software >> RAID-5, either the implementation or the configuration. One thing >> that springs to mind is too small a stripe size. There's a myth going >> around that this improves performance, when in fact it seriously >> degrades it. > > Mind expounding on this topic? Sure, I have done in the man page. > The people at BayDel would like to disagree with you -- they ship a > RAID 3 box that has good performance. RAID-3 doesn't have stripes. But it's optimized towards single file access. Greg -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message