How to find busy disks on HP UX?

sar -d | grep Average | awk '$3 > 10' | sort -rn +2

will show you disks busy for more than 10%

pvdisplay /dev/dsk/<disk>

vgdisplay -v <vg name>

vgdisplay -v /dev/vg00

df -k  | grep <vg name>