You can use the SEARCHVOLUME TSO subcommand to obtain a list of volumes that match selection criteria that you specify. Specify EEFMT4 to limit your search to volumes that are written in the EEFMT4 recording technology. You can also specify a particular media type, such as MEDIA11, to then further limit your search. This diagram shows the syntax of the MEDIATYPE operand and the RECORDINGFORMAT operand for the SEARCHVOLUME TSO subcommand.

>>-+------------------------------+----------------------------->
   |            .-*-----------.   |   
   '-MEDIATYPE(-+-CST---------+-)-'   
                +-ECCST-------+       
                +-EHPCT-------+       
                +-HPCT--------+       
                +-+-MEDIA5-+--+       
                | '-ETC----'  |       
                +-+-MEDIA6-+--+       
                | '-EWTC---'  |       
                +-+-MEDIA7-+--+       
                | '-EETC---'  |       
                +-+-MEDIA8-+--+       
                | '-EEWTC--'  |       
                +-+-MEDIA9-+--+       
                | '-EXTC---'  |       
                +-+-MEDIA10-+-+       
                | '-EXWTC---' |       
                +-+-MEDIA11-+-+       
                | '-EATC----' |       
                +-+-MEDIA12-+-+       
                | '-EAWTC---' |       
                '-+-MEDIA13-+-'       
                  '-EAETC---'         

>--+-------------------------------------+---------------------><
   '-RECORDINGFORMAT--(--+-*--------+--)-'   
                         +-18TRACK--+        
                         +-36TRACK--+        
                         +-128TRACK-+        
                         +-256TRACK-+        
                         +-384TRACK-+        
                         +-EFMT1----+        
                         +-EFMT2----+        
                         +-EFMT3----+        
                         +-EFMT4----+        
                         +-EEFMT2---+        
                         +-EEFMT3---+        
                         '-EEFMT4---'        

RECORDINGFORMAT(EFMT4)

Data has been written to the volume in EFMT4 (enterprise format 4) recording format. A recording format of EFMT4 is valid with existing MEDIATYPE(MEDIA9 | MEDIA10) and new MEDIATYPE (MEDIA11 | MEDIA12 | MEDIA13) only.

RECORDINGFORMAT(EEFMT4)

Data has been written to the volume in EEFMT4 (enterprise encrypted format 4) recording format. A recording format of EEFMT4 is valid with existing MEDIATYPE(MEDIA9 | MEDIA10) and new MEDIATYPE (MEDIA11 | MEDIA12 | MEDIA13) only.

MEDIATYPE(MEDIA11 | EATC)

IBM Enterprise Advanced Tape Cartridge. MEDIA11 is valid only with a recording format of EFMT4 or EEFMT4.

MEDIATYPE(MEDIA12 | EAWTC)

IBM Enterprise Advanced WORM Tape Cartridge. MEDIA12 is valid only with a recording format of EFMT4 or EEFMT4.

MEDIATYPE(MEDIA13 | EAETC)

IBM Enterprise Advanced Economy Tape Cartridge. MEDIA13 is valid only with a recording format of EFMT4 or EEFMT4.