ZCOMPRESS (TAPEBACKUP (NO | YES)) : Specifying whether to use zEDC Services for data sets during backup to tape

Explanation: TAPEBACKUP (NO | YES) are mutually exclusive, optional subparameters of the ZCOMPRESS parameter, specifying whether or not to use zEDC Services when DFSMShsm backs up to tape.

Subparameter Explanation
TAPEBACKUP (NO) DFSMShsm does not use zEDC for a data set backup to tape. DFSMShsm will use the SETSYS COMPACT settings.
TAPEBACKUP (YES) DFSMShsm will use zEDC Services during backup to tape, if this function is supported by the system. If zEDC is not available, DFSMShsm will use the SETSYS COMPACT settings to determine what type of software compaction is used for backup.

SMS relationship: Parameter differs in meaning when applied to SMS-managed or non-SMS-managed DASD volumes or data sets.

SETSYS default: None.

DFSMShsm default: If you do not specify either subparameter on any SETSYS command, the DFSMShsm default is TAPEBACKUP(NO).
Note:
  1. If you do not want a specific data set to be compressed with zEDC during volume backup to tape, use the data set backup exit (ARCBDEXT) to prevent compression.
  2. As compressed-format data sets are already compressed, they are not compressed with zEDC Services during backup to tape.
Parent topic: Optional parameters of the SETSYS command