NBU status: 830, EMM status: No drives are available

Hi

When I running a restore 

22/04/2013 18:34:52 - begin Restore

22/04/2013 18:34:57 - media 000683 required

22/04/2013 18:34:57 - media 000684 required

22/04/2013 18:34:57 - restoring image goiania_1365220370

22/04/2013 18:35:35 - Info bptm(pid=8396) start            

22/04/2013 18:35:35 - started process bptm (8396)

22/04/2013 18:35:35 - Info bpdm(pid=8396) reading backup image          

22/04/2013 18:35:36 - Info bptm(pid=8396) using 30 data buffers         

22/04/2013 18:35:36 - Info bptm(pid=8396) spawning a child process         

22/04/2013 18:35:36 - Info bptm(pid=8396) child pid: 8788          

22/04/2013 18:35:36 - Info bptm(pid=8788) start            

22/04/2013 18:35:36 - started process bptm (8788)

22/04/2013 18:35:38 - Error bptm(pid=8396) NBJM returned an extended error status: No drives are available (2001)  

22/04/2013 18:35:39 - requesting resource 000684

22/04/2013 18:35:39 - Error nbjm(pid=7496) NBU status: 830, EMM status: No drives are available    

22/04/2013 18:35:39 - Error nbjm(pid=7496) NBU status: 830, EMM status: No drives are available    

22/04/2013 18:35:40 - end Restore; elapsed time: 00:00:48

FlashBackup-Windows policy restore error(2817)

I use NBU 7.1.0.4 with Windows 2008 R2.

The tapes are in the library.

Even the tapes and the drives are density set to HCART

How I fix it?

Thanks