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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 ‘Volume list exhausted' or the job log may contain OPT149F 'Load next volume on optical device &1’.
When using control groups 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 7.5 and later,
WRKPCYBRM TYPE(*BKU)theAutomatic virutual volumes: ‘Number of volumes’field was added to support this media size value.