How to add a hotspare for VG in AIX

How to add a hotspare for VG in AIX

a)Displays physical volumes that  are part of hotsparetestvg

lsvg -p hotsparetestvg

b)Designate hdisk6 as a hot spare

chpv -hy hdisk6

c)Change the migrate policy of the vg to migrate data from a failing disk to one spare disk

chvg -hy hotsparetestvg

d)Change the migrate policy of the vg to migrate data from a failing disk to the entire pool of spare disks

chvg -hY hotsparetestvg

7)Changing the synchronization policy
Automatic Synchronization of stale partitions within the vg. This option has significance only for partitions that correspond to mirrored logical volumes

chvg -sy hotsparetestvg
AUTO SYNC: yes

lsvg hotsparetestvg