COMPACT DATA field (COMPACT subsystem parameter)
The COMPACT subsystem parameter controls whether data that is written to archive logs is to be compacted.
| Acceptable values: | YES or NO |
|---|---|
| Default: | NO |
| Update: | option 43 on panel DSNTIPB |
| DSNZPxxx: | DSN6ARVP COMPACT |
This option only applies to data that is written to a tape device that has the improved data recording capability (IDRC) feature. When this feature is turned on, hardware in the IDRC-compliant tape control unit uses several techniques to increase the amount of data that can be written on a tape. Specify NO if you do not want your data to be compacted or you do not use a tape device with the IDRC feature. Specify YES if you use a tape device with the IDRC feature and you want the data to be compacted.
Recommendation: Archive to disk
and then use another facility, such as DFSMShsm, to archive the archive log from
disk to tape. Be aware that data that is compressed to tape can only
be read with a device that supports the IDRC feature. This could be
a concern when you send archive tapes to another site for remote recovery.