Date: Wed, 27 Oct 1999 19:38:33 -0400 (EDT) From: Jaime Kikpole <jaime@malkav.snowmoon.com> To: Andriss <andriss@andriss.com> Cc: questions@freebsd.org Subject: Re: SCSI drive mirroring question Message-ID: <Pine.BSF.4.10.9910271934170.83858-100000@malkav.snowmoon.com> In-Reply-To: <Pine.BSF.4.10.9909130959480.24894-100000@netmint.com>
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On Mon, 13 Sep 1999, Andriss wrote: > Is that the right way to do this? What I want to get is a complete > mirror copy. I need to make sure that the boot info is getting copied, > and the filesystem slices are getting copied right.. In other words, > if the first drive fails, I want to be able to simply take it out, > switch the SCSI id of the second drive, boot the box and be ready to > go... I've never used it myself, but I think that you might want to look into ccd and/or vinum. Also, if you can afford hardware based RAID systems, they're really great. I was testing one out earlier today, in fact. Just to be certain that it worked correctly, I removed drive 3 (of 4 drives) while the system was booted and I was logged on. The machine didn't even crash. It just kept running, though it did make a noise to indicate that a drive went bad. Really cheap mirroring-only RAID system tend to cost about $1200-$1400 for a two disk system. If you don't want to buy one, look at ccd or vinum. One of those might provide real-time mirroring. Jaime To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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