how to create spare disk

[Azamat]

i`ve rx 3600 server. by default from factory it had installed hpux 11.31 on one disk, summary on this server i`ve 6 disk, so i created LVM mirror by script. now i wanna create the 2 spare disk for root(boot) mirror, how i can do it?
thank you in advice
b.r., Azamat

[Jeeshan]

Hi Azamat

looks like a predicted thread you ask for
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1095963

[Azamat]

no! it not likes !!!
i didn`t write that i`ve storage, only internal disk, and i need create spare disks with lvm!!! because customer bought MirrorDisk/UX lic.

[Torsten.]

Why 2 spare disk for a already mirrored vg00?

This is overkill, isn't it?

If you really want to have more disks assigned, you can create a third mirror or assign a spare disk, see also

http://docs.hp.com/en/B3921-60631/vgextend.1M.html

-z sparepv

This option requires the installation of the optional HP MirrorDisk/UX software. It allows you to mark the physical volume(s) specified by pv_path to be either a spare physical volume or a regular, non-spare physical volume. (A spare physical volume can be used to replace an existing physical volume within a volume group when mirroring is in effect, in the event the existing physical volume fails.) sparepv can have one of the following values:

y

The physical volume(s) will be used as spare(s). No physical extents from a spare physical volume will be available as part of the "free" pool of extents in the volume group. The spare physical volume(s) will only be used in the event of another physical volume within this volume group becomes unavailable (fails).



But IMHO the best solution for this server is not a LVM based mirror, but a hardware (integrated) RAID, see

http://docs.hp.com/en/J6369-90071/index.html

If you want, you can also assign a spare disk to this RAID.