From owner-freebsd-questions Wed Apr 17 16:01:15 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id QAA21410 for questions-outgoing; Wed, 17 Apr 1996 16:01:15 -0700 (PDT) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.211]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id QAA21405 Wed, 17 Apr 1996 16:01:11 -0700 (PDT) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id PAA02918; Wed, 17 Apr 1996 15:59:38 -0700 From: Terry Lambert Message-Id: <199604172259.PAA02918@phaeton.artisoft.com> Subject: Re: SCSI RAID controller support? To: gpalmer@FreeBSD.org (Gary Palmer) Date: Wed, 17 Apr 1996 15:59:37 -0700 (MST) Cc: thekind@NETural.com, freebsd-questions@FreeBSD.org In-Reply-To: <2571.829768694@palmer.demon.co.uk> from "Gary Palmer" at Apr 17, 96 08:18:14 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-questions@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk > I'd go for hardware RAID rather than software/controller RAID. You can > buy devices that just plug into your SCSI bus and appear like on VERY > large, VERY fast SCSI drive. Hot swap, striping, error-correction, the > works. Controller/software based solutions will never be as flexable. > > > Otherwise, our webserver may turn into an NT box (PUKE). > > I'm surprised that you need RAID for web serving at all. You'd need a > VERY high hit rate, or be pumping out large documents to need such > access speed. What? What makes you think RAID is faster? It's slower, without hardware acceleration (like an NVRAM write cache). You have to do two writes for each write, otherwise... If he wants addes speed, he should use striping with spindel-sync, not RAID. RAID is for fault tolerance and error recovery. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.