Can DFHSMShsm be used with Librarian Master files?
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Can DFHSMShsm be used with Librarian Master files?


Article ID: 237091


Updated On:




Planning to use IBM DFSMShsm installed in z/OS for data set management, etc.

Are there any impacts of using DFSMShms with Librarian?



Release : 4.4

Component : Librarian


Do not recommend using DFHSMShsm to backup Librarian Master files.
The only recommended method for backing up Librarian Master files is using the Backup Procedures and Librarian Utility.
If the first block of the Master file gets modified by DFSMShsm, it will corrupt the Master and make it unusable.  Have seen Archived / Migrated Master files get corrupted when the Master file is restored.     
If DFSMShsm is intended to do Migrations and Archiving, needs to have a Librarian backup that can be used to restore the Master file in case the Master file gets corrupted during the recall.