Snapshot copy autodelete

Defining a policy for automatically deleting Snapshot copies

To define and enable a policy for automatically deleting Snapshot copies, complete the following step:

Step	Action
1	Enter the following command: snap autodelete vol-name on option value on enables the Snapshot copy autodelete policy. You can define which Snapshot copies you delete by entering the following options and their values:
	Option	Values
	commitment	Specifies whether a Snapshot copy is linked to data protection utilities (SnapMirror or NDMPcopy) or data backing mechanisms, (volume or LUN clones). try--delete only Snapshot copies that are not linked to data protection utilties and data backing mechanisms. disrupt--delete only Snapshot copies that are not linked to data backing mechanisms.
	trigger	Defines when to begin automatically deleting Snapshot copies. volume--begin deleting Snapshot copies when the volume is nearly full snap_reserve--begin deleting Snapshot copies when the Snapshot reserve is nearly fully. space_reserve--begin deleting Snapshot copies when the space reserved in the volume is nearly full.
	target_free_space	Determines when to stop deleting Snapshot copies. Specify a percentage. For example, if you specify 30, then Snapshot copies are deleted until 30 percent of the volume is free space.
	delete_order	newest_first--delete the most recent Snapshot copies first. oldest_first--delete the oldest Snapshot copies first.
	defer_delete	Delete one of the following types of Snapshot copies last: user_created--Snapshot copies that are not autoscheduled prefix--Snapshot copies with the specified prefix_string
	prefix	Delete Snapshot copies with a specific prefix last. You can specify up to 15 characters (for example, sv_snap_week). Use this option only if you specify prefix for the defer_delete option.

Viewing current Snapshot copy autodelete settings

To view current autodelete settings, complete the following step:

Step	Action
1	Enter the following command: *snap autodelete vol-name* show** Result Snapshot copy autodelete settings revert to the following defaults: state--off commitment --try trigger--volume target_free_space-- 20% delete_order--oldest_first defer_delete--user_created prefix-- no prefix specified

Restoring default Snapshot copy autodelete settings

To restore default Snapshot copy autodelete settings, complete the following step.

Step	Action
1	Enter the following command: *snap autodelete vol-name* reset** vol-name is the name of the volume. Result Snapshot copy autodelete settings revert to the following defaults: state--off commitment --try trigger--volume target_free_space-- 20% delete_order--oldest_first defer_delete--user_created prefix-- no prefix specified

Step

Action

Enter the following command:

snap autodelete vol-name reset

vol-name is the name of the volume.

Result

Snapshot copy autodelete settings revert to the following defaults:

state--off
commitment --try
trigger--volume
target_free_space-- 20%
delete_order--oldest_first
defer_delete--user_created
prefix-- no prefix specified

Disabling a Snapshot copy autodelete policy

To disable a Snapshot copy autodelete policy complete the following step.

Step	Action
1	Enter the following command: *snap autodelete vol-name* off** vol-name is the name of the volume. Result Snapshot copies are not automatically deleted when the volume is nearly full.