topic Re: Replace mirrored root disk with same size but faster in Operating System - HP-UX

Replace mirrored root disk with same size but faster

user001 — Wed, 16 Nov 2011 01:40:29 GMT

Hi,

I'm looking at replacing my mirrored root disk with the same size disk but faster RPM.

Whats the best pain free way to do this?

Can i remove the alternate, replace with a newer drive and mirror the primary.

Then boot off the alternate and insert the second disk and repeat?

Thank you.

Re: Replace mirrored root disk with same size but faster

user001 — Wed, 16 Nov 2011 02:10:12 GMT

forgot to mention its an integrity system.

or can i just add the new disk as a additional mirror, and configure it to boot off?

Re: Replace mirrored root disk with same size but faster

Torsten. — Wed, 16 Nov 2011 06:38:13 GMT

All you need is here: When_Good_Disks_Go_Bad_WP
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01911837/c01911837.pdf

Re: Replace mirrored root disk with same size but faster

user001 — Wed, 16 Nov 2011 08:15:19 GMT

Yeah i've got this document.

Just wanted to make sure its exactly the same as replacing a failed disc.

Cheers.

Re: Replace mirrored root disk with same size but faster

Robert_Jewell — Thu, 17 Nov 2011 16:52:57 GMT

It would be the same as a failing attached disk (therefore you must either use pvchange or lvreduce). MirrorDisk/UX does have the ability to mirror up to 3 disks, so that is another option for you as well.

Another option is DRD - Dynamic Root Disk. This allows for the creation of a copy of your boot disk at the disk level (LVM mirroring is done at the LV level).

-Bob