Looking at your tape library with the LIST command

Output from the LIST commands indicates whether:

Connected sets contain data sets that span multiple tapes
Tapes are partially full, full, or empty
Backup and migration tapes are managed in an SMS-managed tape library
Dump tapes are managed in an SMS-managed tape library
A tape is marked full and has an alternate volume

Table 1 shows the LIST commands that are helpful for working with a tape library. The output of the LIST command includes the library name and the storage group or an indication that the tape is not a member of any library. For more information about the LIST command, see z/OS DFSMShsm Storage Administration.

Table 1. Library Usage of LIST Command
Requirement	LIST command
All tapes in a connected set must be inserted together and must be ejected together`.	LIST TTOC SELECT(CONNECTED) Identifies backup and migration data sets that span backup and migration tapes LIST TTOC SELECT(NOTCONNECTED) Identifies backup and migration data sets that do not span backup and migration tapes
The selection status of tapes is that they are either full, not full, or empty.	LIST TTOC SELECT(FULL) Identifies tapes that are full LIST TTOC SELECT(NOTFULL) Identifies tapes that are not full LIST TTOC SELECT(EMPTY) Identify tapes that are empty
The library status of tapes is that they are in a library or not in any library.	LIST TTOC SELECT(LIB) Identifies tapes that are in a library LIST TTOC SELECT(NOLIB) Identifies tapes that are not in any library
The library status of dump tapes is that they are in a library or not in any library.	LIST DUMPVOLUME SELECT(LIB) Identifies dump tapes that are in a library LIST DUMPVOLUME SELECT(NOLIB) Identify dump tapes that are not in any library
TAPECOPY or duplex alternate tapes are often ejected from a library and moved to another physical site. These tapes may be written to a tape library that is located on or offsite.	LIST TTOC SELECT(ALTERNATEVOLUME) Identifies tapes that have an alternate volume LIST TTOC SELECT(DISASTERALTERNATEVOLUME) Identifies tapes that are disaster alternate volumes
The selection status of tapes is that they are full as a result of an error on alternate tape.	LIST TTOC SELECT(ERRORALTERNATE) Identifies tapes that are marked full prematurely
The library status of tapes that are part of an aggregate. Tapes associated with an aggregate are often ejected from a library and moved to another site.	LIST AGGREGATE(agname) Identifies tapes within an aggregate and identifies the library status of those tapes