Date: Sun, 12 Oct 2008 21:09:37 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Anthony Chavez <acc@hexadecagram.org> Cc: freebsd-questions@freebsd.org Subject: Re: RAID migration Message-ID: <20081013040937.GA8578@icarus.home.lan> In-Reply-To: <gcu768$vj3$1@ger.gmane.org> References: <gcu768$vj3$1@ger.gmane.org>
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On Sun, Oct 12, 2008 at 07:10:31PM -0600, Anthony Chavez wrote: > Dear freebsd-questions, > > I have a HighPoint 1820 RAID controller that is using 1 channel for an > OS drive and 3 channels for a RAID-5 array. I'm interested in migrating > to a new (possibly non-HighPoint) card, and am wondering if I will be > able to plug the OS drive into one channel on the new card and have it > "just work." Is it a safe bet that it will? It "probably" will work, assuming that the OS disk is not configured as a RAID or array member in the RAID cards' BIOS. Meaning, if you're using the disk on the controller purely in a "JBOD" fashion, yes, it should work. > I'm curious to know if the array could be migrated just as easily, or if > I should listen to my instinct and count on bumping into > incompatibilities due to proprietary implementations. I can absolutely guarantee you that you will lose access to all of your data once you plug those 3 disks into another controller. You need to back up all of your data from the RAID-5 array using something like rsync, cpdup, or dump, move the disks over to the non-RAID controller, format them (in whatever fashion you want), and then restore the backup. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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