Gany,
Check this out:
# xd -An -j8200 -N16 -tx /dev/rdsk/cxtxdx
3rd +4rth field = VGID . 1+2=PVID 3=CPUID.
[ Where /dev/rdsk/cxtxdx is the PV of the VG ]
You can also get the VGID when you take a map file backup using vgimport with -s option.
Cheers,
Have fun!,
Raj.
" If u think u can , If u think u cannot , - You are always Right . "