Maximum number of Snapshot copies per volume

The Data ONTAP software used with SnapManager supports a maximum of 255 Snapshot copies per volume, including copies not created by SnapManager. Because each SnapManager backup operation creates Snapshot copies, a SnapManager backup operation fails if the volume that contains the database LUN exceeds the 255 Snapshot copy capacity.

Note: The total number of Snapshot copies on a volume might exceed the number of retained backups. For example, if a single volume contains both the SnapInfo directory and the databases, each backup operation generates two Snapshot copies on the volume.