From owner-freebsd-hardware Tue Feb 4 14:55:35 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id OAA19862 for hardware-outgoing; Tue, 4 Feb 1997 14:55:35 -0800 (PST) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id OAA19848 for ; Tue, 4 Feb 1997 14:55:30 -0800 (PST) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.2/8.7.3) id JAA16730; Wed, 5 Feb 1997 09:25:05 +1030 (CST) From: Michael Smith Message-Id: <199702042255.JAA16730@genesis.atrad.adelaide.edu.au> Subject: Re: 2G SCSI disks? In-Reply-To: <199702041839.NAA06190@persprog.com> from David Alderman at "Feb 4, 97 01:38:57 pm" To: dave@persprog.com (David Alderman) Date: Wed, 5 Feb 1997 09:25:03 +1030 (CST) Cc: hardware@freebsd.org X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk David Alderman stands accused of saying: > On 5 Feb 97 at 0:05, Michael Smith proclaimed: > > > > Remind yourself that there's a reason RAID towers don't use SCSI > > > drives... > > > > Yeah, they're cheap and stupid, so you don't have to second-guess them. > > You guys did mean IDE above, right? I have never seen an IDE RAID > system (and I hope I never do). I've seen a number of RAID controllers that use IDE disks (they have SCSI host interfaces, naturally). IDE disks are an excellent choice - they're cheap, and because they're extremely stupid, they're nice and deterministic, which mans you can put all your smarts in the cluster controller and achieve a greater degree of control over the members of the array. Of course the opposite argument is that SCSI array members beat the pants off IDE members performance-wise. > Dave Alderman -- dave@persprog.com -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[