Home > Storage > PowerStore > Storage Admin > Dell PowerStore: Best Practices Guide > Secure snapshots
In PowerStoreOS 3.5 and later, the optional secure snapshot setting allows you to create snapshots for volumes and volume groups. When the secure snapshot setting is enabled, the snapshot is protected from deletion until the retention period expires. This provides a cost-effective line of defense against ransom attacks and accidental deletion of snapshots, volumes, or volume groups. Note that after it is set, the retention period cannot be reduced by the user. It is therefore important to keep this in mind when defining it. Secure snapshots can only be terminated after they expire or by customer-authorized Dell Support.