Date: Tue, 7 Jan 2003 07:33:45 +0100 (CET) From: Soeren Schmidt <sos@spider.deepcore.dk> To: "Andrew P. Lentvorski, Jr." <bsder@allcaps.org> Cc: Nate Lawson <nate@root.org>, current@FreeBSD.ORG Subject: Re: mirrored root fs? Message-ID: <200301070633.h076XjwT042944@spider.deepcore.dk> In-Reply-To: <Pine.LNX.4.44.0301061244520.16301-100000@mail.allcaps.org>
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It seems Andrew P. Lentvorski, Jr. wrote: > Probably your best choice right now if you have a real RAID controller > on your motherboard. The BIOS takes care of most of the nasty booting > details. > If you don't have a real RAID controller on the motherboard, stop now. > Rebuilds don't work if you don't have a real RAID controller. You can > recover, but it requires some dancing with dd (search the archives). > > Advantages: > BIOS handles bootup issues. Very little required from OS > Disadvantages: > Hardware required. Proprietary. > Will not rebuild a broken array without hardware RAID Not true, you can boot off a broken mirror on a non-RAID ATA controller, and then rebuild on the fly with atacontrol once the system is up, you do not need the RAID BIOS for rebuilding a broken mirror. Proprietary, well, in the case of using a stock ATA controller for this its certainly not :) The only caveat is that not all motherboard BIOS's allow you to boot from anything but the disk on the primary ATA channel. If you have such an animal you need to swap drives if it is the primary channel drive that is dead. -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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