Archive log data sets storage requirements

If you decide to store the archive log data sets on disk, you need to reserve enough space on the device. The active log data set and the BSDS are both written to the same location. Therefore, you must reserve enough storage for the active log and the BSDS.

Recommendation: You should store archive logs on disk, especially if Db2 will be running in data sharing mode.

The amount of space for the archive primary and secondary archive log space are calculated as follows:

The primary space (PRIQTY subsystem parameter) is set to the size of the active log data set. The secondary space (SECQTY subsystem parameter) is set to a quarter the size of the active log data set.