topic mirrored disk drive replacements in Operating System - HP-UX

mirrored disk drive replacements

Paul Bertino — Mon, 17 Mar 2014 02:56:44 GMT

I have a set of mirrored drives:
sdisk CLAIMED DEVICE HP 73.4GST373453LC
/dev/dsk/c2t1d0 /dev/rdsk/c2t1d0
disk 2 0/1/1/1.0.0 sdisk CLAIMED DEVICE HP 73.4GST373454LC
/dev/dsk/c3t0d0 /dev/rdsk/c3t0d0

I would like to replace them one at a time. I want to upgrade to 146gig. Replace the 73 gig and put the 146 gig in and copy image from 73 gig mirrored drive. Then repeat this for the next mirrored 146 gig drive. If this can be done and how? This is hp-ux 11.11

Thanks,

P.S. This thread has been moevd from Disk to HP-UX > sysadmin. - Hp forum Moderator

Re: mirrored disk drive replacements

Torsten. — Tue, 19 Jun 2007 12:48:29 GMT

"put the 146 gig in and copy image from 73 gig mirrored drive"

This will limit the capacity of the new drive to 73GB.

Best way to get the disks upgraded is to store an ignite backup, swap the disk and restore the image.

Re: mirrored disk drive replacements

Paul Bertino — Tue, 19 Jun 2007 12:51:10 GMT

I do not have an ignite backup. Is there a way?

Re: mirrored disk drive replacements

Torsten. — Tue, 19 Jun 2007 12:56:41 GMT

make one.
;-)

Do you have a tape drive or another hp-ux server?

Re: mirrored disk drive replacements

Paul Bertino — Tue, 19 Jun 2007 13:08:38 GMT

I do not have another disk other then the 73 gig mirrored drive. We have a san? We have a msl2024 tape drive that is fc and on another server, but that would go through the network.

Re: mirrored disk drive replacements

Torsten. — Tue, 19 Jun 2007 13:13:53 GMT

This is the problem:
In most cases the number of physical extends is set to fit the largest disk in the volume group at the time you created the VG.
You can check this with
vgdisplay -v vg00

For this reason you cannot include a larger disk later.
In HP-UX 11.31 and 11.23 (patched) you can adjust the maximum using vgmodify.

The workaround is a new installation (re-create vg00) - from scratch or from an ignite image.