I ran a test with IXMAINT DSNDELETE this morning, and it did not actually delete the datasets as I would expect. What could be the reason?
DELETE command in DMS deletes the data set from the Catalog and DSNDELETE command in IXMAINT is the house keeping function for Disk FDS/FDB.
If you are expecting the Backup/Archive to be cleaned up after certain months then our your BACKUP/ARCHIVE process should have a RETPD= or EXPDT= to specify the retention period.
The Catalog entry of the dataset with the pseudo volume - ARCIVE (Archived using DISP=RECAT), will be cleaned up when the last DSNINDEX(Archive) in FDS/FDB is removed.
Refer to the Disk tech documentation sections DELETE command and DSNDELETE Command for more information.