From owner-freebsd-hardware Wed Jul 23 08:13:53 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id IAA23375 for hardware-outgoing; Wed, 23 Jul 1997 08:13:53 -0700 (PDT) Received: from mercury.Sun.COM (mercury.Sun.COM [192.9.25.1]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id IAA23351 for ; Wed, 23 Jul 1997 08:13:48 -0700 (PDT) Received: from East.Sun.COM ([129.148.1.241]) by mercury.Sun.COM (SMI-8.6/mail.byaddr) with SMTP id IAA06061; Wed, 23 Jul 1997 08:41:56 -0700 Received: from suneast.East.Sun.COM by East.Sun.COM (SMI-8.6/SMI-5.3) id LAA02476; Wed, 23 Jul 1997 11:12:03 -0400 Received: from compound.east.sun.com by suneast.East.Sun.COM (SMI-8.6/SMI-SVR4) id LAA18710; Wed, 23 Jul 1997 11:12:02 -0400 Received: (from alk@localhost) by compound.east.sun.com (8.8.5/8.7.3) id KAA06339; Wed, 23 Jul 1997 10:11:54 -0500 (CDT) Date: Wed, 23 Jul 1997 10:11:54 -0500 (CDT) Reply-To: Anthony.Kimball@East.Sun.COM Message-Id: <199707231511.KAA06339@compound.east.sun.com> From: Tony Kimball MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: kuku@gilberto.physik.rwth-aachen.de Cc: sos@sos.freebsd.dk, freebsd-hardware@FreeBSD.ORG Subject: Re: building RAID systems References: <199707230652.IAA04056@gil.physik.rwth-aachen.de> <199707230749.JAA21433@sos.freebsd.dk> <19970723104014.09599@gil.physik.rwth-aachen.de> X-Face: O9M"E%K;(f-Go/XDxL+pCxI5*gr[=FN@Y`cl1.Tn Sender: owner-freebsd-hardware@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Quoth Christoph Kukulies on Wed, 23 July: : > > a) what controllers are there? Mylex makes a SCSI RAID controller for <$1000 to start. : > > b) can one build such systems of cheapo IDE drives? I wish. SCSI is hopeless these days. About 3-5x the price of IDE. : [ccd] : : Thought of this, too, but this doesn't give me RAID advantages : like hot swapping of media and 28 GB isn't enough, anyway :-) Use ccd to cat multiple Mylex subsystems, and you do get RAID advantages. But the $/GB is a lot higher. : BTW, how does one : increase an existing 6GB ccd drive on the fly' (I mean without : backing up the data) ? (assumed answer: impossible) Nothing is impossible when it's just software.