I have 2 x  dell powervault 120T with single DLT4000 drive

if i attach either to a netbackup master then i can configure the devices
into netbackup without any problem
if i attach both to the same master then the wizard and driver installation
detects 1 library and 3 drives instead
of 2 robots and 2 drives.

The same happens if i try to add them manually.

Anyone any idea what is happening.

The OS (W2K) sees two medium changers and 2 drives as expected.
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