It clearly says what it wants - target sessions for the device must
be set to 1.
   NDMP backups can not be multiplexed - it is single stream.


Broad, Andrew [IT] wrote:

We're having all sorts of problems at the moment with our backups.  Tapes aren't being 
loaded and save commands hang and all manner of problems.  hen I try and do a "nsrjb 
-vEH" on the jukebox, to NDMP tapes are stuck, and keep giving the following error 
message:

About to release Robot arm lock
box_display: `' for drive `rd=nassyd01:nrst0a'
Error: while operating on slot `56': NDMP devices must have target sessions set 
to a value of 1.

Error: while operating on slot `92': NDMP devices must have target sessions set 
to a value of 1.

nsrjb: Jukebox error:  Tue 10:29:36 NDMP devices must have target sessions set 
to a value of 1.

I get the same error: "NDMP devices must have target sessions set to a value of 
1" when I set the device to enable (even though it's already enabled.

This was happening yesterday afternoon as well and hardly any of our backups 
have run.  I've even restarted all the servers and reset the jukeboxes.  
Apparently no changes had been made to our NAS servers.

Any ideas what could be causing this?

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