SLPs (duplication) not using all Tape Drives
I've 2 tape libraries with a total of 3 drives (one library has a single drive) and SLPs configured to first backup the data to disk and then duplicate to tape.
However I notice that though the SLPs are distributed across the 3 drives, one drive is not being used at all although backup jobs are in queue.
My environment in brief is as follows:
1. One Master cum Media server
2. One Media server
3. One SAN Media server
Each server above is configured to use the 3 drives. I'm not sure why all the 3 drives are not being utilized as this would speed up my tape backup process which is currently going into backlog till a week later.
Any help would be much appreciated.