From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bobby Subject: Re: Rebuilding RAID Date: Thu, 3 Apr 2008 18:10:57 -0400 Message-ID: <200804031810.57913.bobby@d4business.com> References: <200804031555.53996.bobby@d4business.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200804031555.53996.bobby@d4business.com> Content-Disposition: inline Sender: linux-admin-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: linux-admin@vger.kernel.org On Thursday 03 April 2008 15:55:53 Bobby wrote: > Hi, > > It's been a while and I can't seem to find a manual or any steps that > describes the sequence I need to follow and it has been too long since I > last worked with RAID controllers. > > Unfortunately we got a couple of Dell servers (PowerEdge 1850). One drive > from the backup system was used to rebuild a "live" system. Now the backup > machine needs to be rebuilt from the drive used on the live system. It uses > PERC/CERC BIOS utility U821 from 2004. > > The steps were: the original drive 0 remained in the backup system and > drive 1 was used to rebuild the "live" system. > > Then they upgraded the live system and then used a new drive to replace the > backup drive. This leaves the original backup drive 0 out of date. > > My question now is which steps do I take to rebuild the backup system from > drive 1 and thus make drive 0 a copy of drive 1. I discovered that I could force drive 0 offline which then allows me to rebuild it. Which should then be done from drive 1. -- Bobby