One of the groups hung last night with this error message. 

media request alert: Waiting for  writable volumes to backup pool <Pool_Name>' 
disk or tape on NW server.

Now that pool has two (appen) volumes but NW failed to mount them 
automatically. In the morning I manually loaded the volume in the drive and 
backup then completed successfully.

It doesn't happen all the time.(NW 7.3.3)

Pls advice.

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