An imported tape contains content that was created by another DPM server. When you add an imported tape to the tape library, you must recatalog the tape to identify the contents of the tape.
During the recatalog operation, DPM reads from the tape and adds information about the data that it contains to the database. After recatalog completes, you can recover data from the tape by selecting a recovery point from the data on the tape.
To import tapes
In DPM Administrator Console, click Management on the navigation bar.
Click the Libraries tab, and then select the tape to import.
In the Actions pane, click Recatalog imported tape.