From owner-freebsd-hardware Wed Jul 23 01:37:54 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id BAA04458 for hardware-outgoing; Wed, 23 Jul 1997 01:37:54 -0700 (PDT) Received: from Campino.Informatik.RWTH-Aachen.DE (campino.Informatik.RWTH-Aachen.DE [137.226.116.240]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id BAA04451 for ; Wed, 23 Jul 1997 01:37:51 -0700 (PDT) Received: from gil.physik.rwth-aachen.de (gilberto.physik.rwth-aachen.de [137.226.31.2]) by Campino.Informatik.RWTH-Aachen.DE (RBI-Z-5/8.6.12) with ESMTP id KAA22798; Wed, 23 Jul 1997 10:38:21 +0200 (MET DST) Received: (from kuku@localhost) by gil.physik.rwth-aachen.de (8.8.5/8.6.9) id KAA04559; Wed, 23 Jul 1997 10:40:15 +0200 (MEST) Message-ID: <19970723104014.09599@gil.physik.rwth-aachen.de> Date: Wed, 23 Jul 1997 10:40:14 +0200 From: Christoph Kukulies To: =?iso-8859-1?Q?S=F8ren_Schmidt?= Cc: Christoph Kukulies , freebsd-hardware@FreeBSD.ORG Subject: Re: building RAID systems References: <199707230652.IAA04056@gil.physik.rwth-aachen.de> <199707230749.JAA21433@sos.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Mailer: Mutt 0.75e In-Reply-To: =?iso-8859-1?Q?=3C199707230749=2EJAA21433=40sos=2Efreebsd=2Edk=3E=3B_fro?= =?iso-8859-1?Q?m_S=F8ren_Schmidt_=3Csos=40sos=2Efreebsd=2Edk=3E_on_Wed?= =?iso-8859-1?Q?=2C_Jul_23=2C_1997_at_09=3A49=3A59AM_+0200?= Sender: owner-freebsd-hardware@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Wed, Jul 23, 1997 at 09:49:59AM +0200, Søren Schmidt wrote: > In reply to Christoph Kukulies who wrote: > > > > Does anyone have a pointer to a recipe to build up > > a RAID system? > > > > a) what controllers are there? > > > > b) can one build such systems of cheapo IDE drives? > > > > (with FreeBSD having control over it - of course) > > You could put 4x7gigs EIDE drives on the two EIDE channels on > a modern motherboard. The run CCD to concat them together to > one 28gig drive :) Thought of this, too, but this doesn't give me RAID advantages like hot swapping of media and 28 GB isn't enough, anyway :-) > > I do this with two 4gig MAXTOR's, one on each channel of cause, > works like a charm, and have given me 8gigs for US$ 500 .... I have a 3+3GB ccd drive on cvsup.de.freebsd.org myself using two (though slow) quantum 3GB scsi drives attached to ncr controllers and despite of occasional scsi command timeouts which I havn't tracked down yet, it's working nice. BTW, how does one increase an existing 6GB ccd drive on the fly' (I mean without backing up the data) ? (assumed answer: impossible) > > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > Søren Schmidt (sos@FreeBSD.org) FreeBSD Core Team > Even more code to hack -- will it ever end > .. -- Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de