How do we remove mirror (vg00) in itanium system having 11.23 version.
I think that LVM mirroring is maintained at the logical volume level (each logical extent is given a mirror, actually). So just use lvreduce to remove the mirrors for each volume in the vg.
Yep! use the lvreduce command.
But you will need to identiy on what disk you wish to remove the mirror, as you may end up removing the wrong "mirror" if you do not supply the actual disk you wish to remove from
ie lvreduce -m 0 /dev/vg00/lvolX /dev/dsk/c1t0d0