Scratch pools in CA VM:Tape let you subdivide scratch tapes into groups (or pools) of tapes with similar physical characteristics, locations, and means of access. You may need to subdivide a set of tapes to promote operational convenience or to ensure that certain types of data are stored on a restricted set of tapes. Scratch pools also allow only certain users or jobs to gain access to a group of scratch tapes. For more information about setting up scratch pools, see Scratch Pools.
CA VM:Tape also supports scratch pools when using a supported ARM product. For more information about using CA VM:Tape scratch pools with these ARMs, see the following appendix for your ARM product:
The IBM 3494 Tape Library Data Server uses scratch categories, not scratch pools. By default scratch pool support for this device means that CA VM:Tape keeps track of the pool definitions and the associated tapes. When CA VM:Tape receives a request for a tape from a scratch pool, it selects the tape and sends a request to the Tape Library Data Server asking it to mount the selected tape. CA VM:Tape also provides support for mounting scratch tapes from RMS scratch categories. When using this facility CA VM:Tape sends a request to the IBM 3494 to mount an available scratch tape from the specified RMS scratch category.
Note: For more information about scratch mount requests and scratch pools in the Tape Library Data Server, see IBM Tape Library Data Server.
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