Expire after duplication retention type for storage destinations

The Expire after duplication retention can be applied to backup as well as duplication destinations.

When data is staged to a tape device, the following retention options are available:

Staged capacity managed
Expire after duplication

NetBackup does not allow the last destination in the lifecycle to use the Expire after duplication retention type because no subsequent copy is configured. NetBackup requests that another retention type is chosen for the destination.