Quantum 10K II - Manual (Page 180)

SCSI Description
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5–113
5.18 PERSISTENT RESERVATION IN Command (5Eh)
The PERSISTENT RESERVATION IN command is a 10-byte command used to
obtain information about persistent reservations and reservations that are active
within a device server. It is used in conjunction with the PERSISTENT
RESERVATION OUT command.
Note that a if device that has RESERVE (10), RESERVE (6), extent reservations, or
SCSI Media Changer (SMC) element reservations active receives a PERSISTENT
RESERVATION IN command, the PERSISTENT RESERVATION IN command is
rejected with a RESERVATION CONFLICT status reported.
The figure below illustrates the format of the PERSISTENT RESERVATION IN
command; the table that follows explains the data fields of the command.
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation Code (5Eh)
1 Reserved Service Action
2 - 6 Reserved
7 – 8
(MSB)
Allocation Length
(LSB)
9 Control
Figure 5–50 PERSISTENT RESERVATION IN Command Descriptor Block — Data
Format