You might want to rename a Snapshot copy generated by the snap sched command if it contains data that you want to save. The snap sched command overwrites and deletes regularly scheduled Snapshot copies. You can use the snap rename command to save a Snapshot copy.
vol_name is the name of the volume that contains the Snapshot copy to rename.
from_name is the current name of the Snapshot copy to rename.
to_name is the new name you want to give to the Snapshot copy.