Cristalink Support Forums

I currently have DPM 2012 and Firestreamer setup with one tape library connected to a NAS. Today I added DAS to my server and set it up a another library in Firestreamer. After rebooting I noticed that DPM shows my original tape library offline and two additional tape libraries, Library-2 and Library-3. Library-2 looks like a copy of the original library and Library-3 is my new one. Library-3 is online, but shows no free tapes.

When you change the number of libraries, the serial numbers of libraries change, meaning that DPM will no longer see old libraries, only new ones. See Advanced Configuration for more info.

You need to reconfigure your protection groups to use new libraries, and add tape to the additional library.