If you recieve the error message:
Cannot load exchanger medium (Target drive is busy.)
From Data Protector Manager (or from the backup reports), you have a tape “stuck” in your tape station. This is something that can happen for example if the tape station looses connection to the software using the tape station, (for example a crash on the server) and the software is not setup to automaticly correct the issue itself.
If you want to eject the tape in use you will normally find a option for it on the tape station itself. But a good thing to do is to set up Data Protector to automaticly eject a tape that has taken over a drive.
1) Start Data Protector Manager GUI
2) Select Devices and Media
3) Right click on the library, select properties
4) Go to Control Tab, and select “Eject medium” under the busy drive handling topic