Fujitsu M2488 manual Medium Changer, Load Unload Check Condition Status, GAL Request

TAPE UNIT SCSI COMMANDS M2488 PRODUCT GUIDE

Medium Changer:

If a Medium Changer is attached then an automatic load of the next tape cartridge may occur fol- lowing the Tape Unit unload operation (Load bit = 0). The decision to perform this automatic load is based upon:

(a)the Medium Changer’s mode setting (Manual, Automatic or System),

(b)the presence of other tape cartridges and

(c)the mode page settings of the Medium Changer.

See the description of the Medium Changer for more details. If an automatic load occurs, the LOAD UNLOAD command will not return status until the automatic load completes.

4-3.7.2 LOAD UNLOAD CHECK CONDITION Status

If the status reported for the previous command was a CHECK CONDITION because data could no longer be written to the tape, then any buffered data is discarded before any load or unload operation occurs.

If a Medium Changer is attached but the changer is in System Mode1, then no load or unload oper- ation is performed and CHECK CONDITION status is reported. The sense key reported is ILLE-

GAL REQUEST.

If CHECK CONDITION status is reported for a LOAD UNLOAD command with the Immediate bit set to 1 then the load or unload operation is not performed.

1.The mode of the Medium Changer can be set either by using the Medium Changer’s operator panel or by using the Medium Changer’s MODE SELECT command.

4-26 CG00000-011503 REV. A April 1997