For SCSI libraries:

The SERVER issues a request to have the VOLUME inserted into a cartridge slot in the library or, if available, into an entry PORT. The cartridge slot or entry port is identified by its element address. For 349X libraries: The volume could already be in the library, or you could PUT it into the I/O station when prompted.

Yes- Specifies that the server searches the library for volumes to be checked in

Bulk -Specifies that the server searches the library's entry/exit PORTS for volumes that can be checked in automatically. This option only applies to SCSI libraries.

For SCSI libraries:

The server issues a request to have the volume inserted into a cartridge slot in the library or, if available, into an entry port. The cartridge slot or entry port is identified by its element address. For 349X libraries: The volume could already be in the library, or you could put it into the I/O station when prompted.

Yes- Specifies that the server searches the library for volumes to be checked in

Bulk -Specifies that the server searches the library's entry/exit ports for volumes that can be checked in automatically. This option only applies to SCSI libraries.