If you are using a shared library, the Refresh operation displays the latest status of the tape and the result of the last ...

If you are using a shared library, the Refresh operation displays the latest status of the tape and the result of the last rescan performed on the library (or stand-alone tape drive) by any DPM server sharing the library. If you are using a dedicated library, DPM will refresh the state of the library and tapes automatically.

For more information about shared libraries, click Help.