From owner-freebsd-hackers Mon Sep 7 11:19:46 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA09829 for freebsd-hackers-outgoing; Mon, 7 Sep 1998 11:19:46 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from ns1.yes.no (ns1.yes.no [195.119.24.10]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA09525 for ; Mon, 7 Sep 1998 11:18:12 -0700 (PDT) (envelope-from eivind@bitbox.follo.net) Received: from bitbox.follo.net (bitbox.follo.net [195.204.143.218]) by ns1.yes.no (8.9.1a/8.9.1) with ESMTP id UAA20653 for ; Mon, 7 Sep 1998 20:18:02 +0200 (CEST) Received: (from eivind@localhost) by bitbox.follo.net (8.8.8/8.8.6) id UAA27743; Mon, 7 Sep 1998 20:16:36 +0200 (MET DST) Message-ID: <19980907201635.56912@follo.net> Date: Mon, 7 Sep 1998 20:16:35 +0200 From: Eivind Eklund To: Mike Knoll , hackers@FreeBSD.ORG Subject: Re: ccd'ed disks References: <199809071630.MAA20264@lafcol> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.89.1i In-Reply-To: <199809071630.MAA20264@lafcol>; from Mike Knoll on Mon, Sep 07, 1998 at 12:44:54PM -0400 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, Sep 07, 1998 at 12:44:54PM -0400, Mike Knoll wrote: > I have two IDE disks, different size, and was wondering if I'd benifit from > ccd'ing them with striping. I understand IDE has some issues that make > RAID type devices nonexistant, but what are the reasons? They don't exist, really. You can buy RAID-controllers for IDE. The only issues are that it is slightly more work to create a high-performance RAID-controller that use IDE to simulate SCSI, that you want SCSI for your RAID to be able to have several requests active at the same time, and that the IDE-drives normally are low-end drives physically compared to the SCSI-drives. Eivind. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message