From owner-freebsd-stable Tue Sep 4 10:49:39 2001 Delivered-To: freebsd-stable@freebsd.org Received: from msgbas2.cos.agilent.com (msgbas2x.cos.agilent.com [192.25.240.37]) by hub.freebsd.org (Postfix) with ESMTP id 7D2EA37B406 for ; Tue, 4 Sep 2001 10:49:33 -0700 (PDT) Received: from msgrel1.cos.agilent.com (msgrel1.cos.agilent.com [130.29.152.77]) by msgbas2.cos.agilent.com (Postfix) with ESMTP id 1E06FA5E for ; Tue, 4 Sep 2001 11:49:33 -0600 (MDT) Received: from mina.soco.agilent.com (mina.soco.agilent.com [141.121.54.157]) by msgrel1.cos.agilent.com (Postfix) with ESMTP id B7D82DD for ; Tue, 4 Sep 2001 11:49:32 -0600 (MDT) Received: from mina.soco.agilent.com (darrylo@localhost [127.0.0.1]) by mina.soco.agilent.com (8.9.3 (PHNE_22672)/8.9.3 SMKit7.1.1_Agilent) with ESMTP id KAA12474 for ; Tue, 4 Sep 2001 10:49:32 -0700 (PDT) Message-Id: <200109041749.KAA12474@mina.soco.agilent.com> To: FreeBSD-Stable Subject: Re: RAID5 Reply-To: Darryl Okahata In-Reply-To: Your message of "Mon, 03 Sep 2001 14:25:59 EDT." <20010903142145.K10812-100000@topperwein.dyndns.org> Mime-Version: 1.0 (generated by tm-edit 1.6) Content-Type: text/plain; charset=US-ASCII Date: Tue, 04 Sep 2001 10:49:31 -0700 From: Darryl Okahata Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Chris BeHanna wrote: > AFAIK, there are no IDE RAID cards that support RAID-5. You are The 3ware cards support RAID5, although the performance is supposedly not very good. > Or you could use vinum(8) and use whatever IDE controller you > have, and whatever RAID configuration that you want. Note, however I used to use vinum, but I'm now using a 3ware controller. It's *SOOO* nice to have something that's easy to set up, yet "just works". My issues with vinum are: [ Note: it's been a year or two since I've used vinum, and so the following may be out-of-date. Corrections appreciated. ] * Once set up, vinum works well, but it takes a lot of hard reading to set up. The actual work itself is not hard, mind you, but it's difficult to figure out what you need to put into the config file. It's *SO* much easier to configure the 3ware controller .... * Vinum is not part of the GENERIC kernel. I had /usr on a vinum-controlled partition, and upgrading FreeBSD via CDs was a royal pain. I basically had to do the upgrade to the root drive (moving /usr out of the way, rebuild the kernel with vinum, reboot, and then copy/move the contents of /usr into the vinum-controlled /usr -- bleah). [ Today, I should be able to kldload vinum, but I don't think I can do this at install time from the CDROM, and so I'd still have to play games with /usr. ] The 3ware driver is part of GENERIC, and so upgrades/installation is completely painless. My root partition is also on a 3ware-controlled drive; you can't do this with vinum (vinum is, however, very cost-effective ;-). * (This may have changed.) There is no documentation on how to do disaster recovery with vinum. The procedure is (roughly) documented with 3ware (although I should, but have not, admittedly, tested it). -- Darryl Okahata darrylo@soco.agilent.com DISCLAIMER: this message is the author's personal opinion and does not constitute the support, opinion, or policy of Agilent Technologies, or of the little green men that have been following him all day. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message