Replication Extract can access the first or second copy of the active and archive DB2 logs. If your active log is small and is archived several times a day, consider archiving the DB2 system to a data access storage device (DASD) instead of to tape. Archiving the log to DASD helps ensure that a DASD copy of any log data needed by Replication Extract is always available. This eliminates the need to mount tapes or to wait for a unit or a volume to become available.
You can then use DFHSM or a similar product to migrate the archive data sets to tape on a regular basis to reduce the amount of DASD devoted to your active and archive log data sets.
WARNING! Never create archive logs from different DB2 subsystems or for more than one LTM for MVS on a single tape. Archive logs cannot be merged and read in parallel if different subsystems are using the same tape. This is especially important in data-sharing environments.
