----- Original Message ---- From: Chris Arnold
To: opensuse Sent: Tuesday, August 19, 2008 3:30:03 PM Subject: [opensuse] OT: Expanding RAID size
OK, i know this is not an opensuse question but i want to see what others have to say about this.
I currently have an ibm xserver running SLES 10 SP2 with 2 drives of 36gb a piece (this is an active/production server) in raid 1 (hardware). I want to replace those 2 drives with larger >drives without losing any data. What i have tried so far is to remove one of the 36gb drives and install 1 of the larger drives and hope that it would rebuild and see the "extra" space. >But this does not appear to work. What is the correct way to do this?
Hi Chris, It depends on what hardware/software raid you are using. With many *real* hardware raid controllers you need to back up you data, re-create the new raid array and then restore to it. Pretty stupid. On some fake 'hardware' raid controllers (i.e. nvraid / dm-raid) you can replace all drives one by one with a larger drive, rebuilding the array after each new (larger disk) and then you can literally *delete* the array. Then yu go back and re-create making sure you do *not* select erase data first. Magically your data will all be there, intact, and you will see the new larger array size. I'd still back everythng up in case something went wrong. Vahe -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org