# Creating a Snapshot autodelete policy


You can create a policy to automatically delete snapshots when the amount of available space in your volume is running low. Use the [volume snapshot autodelete modify](https://docs.netapp.com/us-en/ontap-cli-9131/volume-snapshot-autodelete-modify.html) ONTAP CLI command to establish an autodelete policy for a volume. 

When using this command, use your data to replace the following placeholder values:
+ Replace *`svm_name`* with the name of the SVM that the volume is created on.
+ Replace *`vol_name`* with name of the volume.

For `-trigger`, assign one of the following values:
+ `volume` – Use `volume` if you want the threshold at which snapshots are deleted to correspond to a total used-volume capacity threshold. The used-volume capacity thresholds that trigger snapshot deletion are determined by the size of your volume, with the threshold scaling from 85–98 percent used capacity. Smaller volumes have a smaller threshold, and larger volumes have a larger one.
+ `snap_reserve` – Use `snap_reserve` if you want snapshots to be deleted based on what can be held in your snapshot reserve.

```
::> volume snapshot autodelete modify -vserver svm_name -volume vol_name -enabled true -trigger [volume|snap_reserve]
```

For more information, see the [ volume snapshot autodelete modify](https://docs.netapp.com/us-en/ontap-cli-9131/volume-snapshot-autodelete-modify.html) command in the *NetApp ONTAP Documentation Center*.