topic Is it possible to move disk from a enclosure to another on VA7400? in Disk Enclosures

Is it possible to move disk from a enclosure to another on VA7400?

faust2004 — Mon, 13 Jan 2003 09:14:56 GMT

Hi , friends

we have va7400 connected to hp N4000box. all the disks on va7400 are used as autoraid.
and data in stored in it . now we want to move some disk from a enclosure to another (all enclosure are not full). is it possible ?how to do it?

Sunny
Thanks

Re: Is it possible to move disk from a enclosure to another on VA7400?

Armin Feller — Mon, 13 Jan 2003 09:19:16 GMT

Hi,

you can only move unused disks to an other enclosure or all disks used by an volume group by vgexporting, moving and vgimporting.

Regards ...
Armin

Re: Is it possible to move disk from a enclosure to another on VA7400?

Eugeny Brychkov — Mon, 13 Jan 2003 10:12:09 GMT

Sunny,
all the data are spread across VA disks in Redundancy Group. So if you'll get one disk out of VA, it will work, if you'll get another disk from VA, in most cases it will work too (remember: RAID5DP and skilful RAID0/1 organization), but, if you'll remove more than 2 disks and VA will not manage to rebuild before it then data will be lost.
So if you want to move disks from one VA to another I recommend you to do full backup of VA data, delete all LUNs in VA, then remove disks and insert them into another VA. You should include that disks in the new VA disk set because it will display them as 'previously used' (armcfg -a). Then, on the first VA, recreate all LUNs and restore data.
I strongly recommend you to call HP - they'll do it in fast and secure way (I may miss something in procedure described above...)
Good luck!
Eugeny