How to be more efficient when the batch JCL references archived data sets when ARM is installed?
ARM provides a JES2 Exit that makes batch processing more efficient when the batch JCL references archived data sets. Instead of letting the job tie up an initiator while the needed data sets are restored one by one, the JES2 Exit support holds the job, and routes all the needed restores to ARM at once (where multiple servers restore the data sets more efficiently). ARM then releases the job when all restores are completed. Use of the JES2 Exit is optional.
For more detail about how this should be configured please refer at the:
To configure the JES2 Exit chapter from Configuration Guide of Vantage.