Mirroring situation

[Rob Watson_1]

I have two 4 GB hard drives in My HP J219XC 9000. They are mirrored and are
both bootable. I would like to know if I can add a 9 GB harddrive. Un-mirror
the 4 GB hard drives. add the 9 GB hard drive and mirror the two 4GB to the 9
GB. If I can, how would I do that? I'm on 10.20. Will I loose the 1 GB from
the 9GB? I sure hope my questions makes sense. Thank you for your assistance

[Carlos Uribe_3]

You can add the thirt disk, open the actual mirror and create a new one. you
have to take some preventions: make copyutil and backup your data, and when you?
ll open the original mirror you have to eliminate the second disk, not the
original, if you eliminate the original, the system might not boot again.

for open the mirror use

lvreduce -m 0 /dev/vg00/lvolN /dev/dsk/cXtYdZ

for each lvol in vg00. cXtYdZ is the mirror disk.

know, you can reduce the vg00 and create the new mirror with the 9GB disk.

know, extend the vg00 again with the 4GB disk and use the space.

you can use the last 1GB space, but without mirror.

[Carlos Riera]

Hi Rob:

You must make 9Gb disk bootable too.

Search in HP-UX forum for boot disk mirror. There are good procedures and
interesting Replys, that i?m sure you will like read.

Regards

[Rick Taylor_5]

You may also want to put the 4gb disks in one physical volume group (PVG) and
the 9gb disk in another with an allocation policy of PVG-Strict.

This will help prevent accidentally extending a logical volume from one 4gb
disk to another 4gb disk.