Quantum 10K II - Manual (Page 259)

SCSI Description
5–192 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
RESERVE (6) Command (16h) (continued)
Table 5–91 RESERVE (6) Command — Field Descriptions (continued)
Field Description
Extent The drive supports reservations only on entire logical units. The value
must be 0.
Reservation Identification Any value in this field is ignored by the drive.
Extent List Length Any value in this field is ignored by the drive.
NOTE: The drive returns RESERVATION CONFLICT status if the unit is already reserved for another
initiator. Once the reservation is honored, any command from another initiator (except
INQUIRY or REQUEST SENSE) is rejected with RESERVATION CONFLICT status.