Gerhard,
         I may be missing something, but I don't follow the logic in your 
example about a single job wanting 8 drives being worse off if a drive is 
flagged as unavailable. 
If a job wants 8 drives, and 1 is broken, then surely that job isn't going 
to run either way without a JCL change, is it?
The only difference I see is that with the broken drive being flagged 
unavailable the job may fail, whereas if it tries to assign the broken 
drive because it is flagged as available it will hang indefinitely.
Personally, I'd rather the job failed and freed up all 7 other tape drives 
for use by other work if the drive is broken.

??????

Steve O.

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