From owner-freebsd-hardware Fri Mar 6 22:22:19 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id WAA01132 for freebsd-hardware-outgoing; Fri, 6 Mar 1998 22:22:19 -0800 (PST) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from sendero.simon-shapiro.org (sendero-fddi.Simon-Shapiro.ORG [206.190.148.2]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id WAA01112 for ; Fri, 6 Mar 1998 22:21:45 -0800 (PST) (envelope-from shimon@sendero-fxp0.simon-shapiro.org) Received: (qmail 25096 invoked by uid 1000); 7 Mar 1998 06:30:02 -0000 Message-ID: X-Mailer: XFMail 1.3-alpha-021598 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <19980307163951.57653@freebie.lemis.com> Date: Fri, 06 Mar 1998 22:30:01 -0800 (PST) Reply-To: shimon@simon-shapiro.org Organization: The Simon Shapiro Foundation From: Simon Shapiro To: Greg Lehey Subject: Re: getting oriented with RAID Cc: freebsd-hardware@FreeBSD.ORG, Omar Thameen , Tom Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On 07-Mar-98 Greg Lehey wrote: > On Tue, 3 March 1998 at 17:28:48 -0800, Tom wrote: >> >> On Tue, 3 Mar 1998, Omar Thameen wrote: >> >>> I really want to make sure I understand the implementation of RAID >>> on freebsd, because it looks like a great thing to have on production >>> servers. Sorry if this continues to be very basic. >> >> Sorry, there is no "implementation of RAID on freebsd". RAID is >> handled >> by the controller. FreeBSD just sees a big disk. > > You're just barely correct. I'm writing a software RAID 5 > implementation. ccd is a RAID 0/1 implementation. Ccd knows how to do ``write-only'' RAID-{0,1}. To recover from a failure, under CCD is less than automatic. Also, to put your boot device on ccd RAID is less than trivial. Recovery and management tools are essential for most people. ---------- Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG Voice: 503.799.2313 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message