We had this problem at one of our DR exercises.
Our solution was to define a separate set of non-library drives that
were always offline at our home installation.
For example
IEE457I 21.05.31 UNIT STATUS 407
UNIT TYPE STATUS VOLSER VOLSTATE
A000 3590 OFFLINE /REMOV
A001 3590 OFFLINE /REMOV
A002 3590 OFFLINE /REMOV
A003 3590 OFFLINE /REMOV
IEE457I 21.06.26 UNIT STATUS 483
UNIT TYPE STATUS VOLSER VOLSTATE
0A00 359L O-NRD-R /REMOV
0A01 359L O-NRD-R /REMOV
0A02 359L O-NRD-R /REMOV
0A03 359L O-NRD-R /REMOV
Regards
Lorne Dudley
Queen's University
Kingston, Ontario
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