BRMS creates additional turnkey volumes for automatic backups for the following:
Cloud control groups QCLDBIPLxx or QCLDBGRPxx QCLDBIPLxx, QCLDUIPLxx, QCLDBGRPxx, or QCLDUGRPxx that need to be used to burn DVDs for recovery.
Virtual optical backups that use media class QCLDVRTOPT or QAVVRTOPT since optical devices do not have an exit program interface to handle media switching while a backup is running.
Virtual tape backups that use media class QCLDVRTTAP or QAVVRTTAP since BRMS creates and manages an image catalog in library QUSRSYS named Q1ABRMPOOL. This image catalog is for internal BRMS use in the event of a volume span while saving media information for library QUSRBRM.
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CALL PGM(QBRM/Q1AOLD) PARM('NUMOPTVOLS' '*REMOVE')NOTE:
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Using virtual media requires a large amount of system storage. A symptom that indicates your system storage is too small is message BRM1799 indicating the save operation was cancelled. Since optical devices do not have an exit program interface to handle media switching while a backup is running, the backup command must provide enough volumes to successfully hold the backup data. A symptom that indicates the backup does not fit on the initial number of volumes provided is the backup will fail with message BRM4301
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QCLDBIPLxx, QCLDUIPLxx, QCLDBGRPxx or QCLDUGRPxx, the required volume size is 4.7G to burn DVDs for manual recovery. The control group data size cannot exceed 350Gb due to the 75 volume restriction unless the Cloud NFS Solution is enabled. When using smaller tape volume sizes, there are reporting limitations in BRMS if more than 50 volumes are used for the backup. If more the 50 volumes are used, the Media_Set_Info table function may be used to return the serial media set information. In 5770-BR2 7.4, 5770-BR2 7.5, and 5770-BR1 7.5 and later, WRKPCYBRM TYPE(*BKU) the Automatic virutual volumes: ‘Number of volumes’ field was added to support this media size value.
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