User's Guide

Commands: Reserve Unit (16h / 56h) Page 147
10-byte version
The drive also supports the SCSI-3 10-byte Reserve Unit Command. The table
below shows the descriptor block for the 10-byte CDB.
Byte
Bits
7 6 5 4 3 2 1 0
0 0 1 0 1 0 1 1 1
1 0 0 0 3rd Pty 0 0 LongID* 0
2 0 0 0 0 0 0 0 0
3 Third-Party Device ID
4 0 0 0 0 0 0 0 0
5 0 0 0 0 0 0 0 0
6 0 0 0 0 0 0 0 0
7 Parameter List Length (MSB)*
8 Parameter List Length (LSB)*
9 vendor unique* 0 0 0 0 Flag Link
* These fields must be set to zero.
Command Descriptor Block Field Description
The following table defines the fields in the CDB.
Field
Name Bytes Bits Description
3rd Pty
bit
1 4 The Third Party bit indicates whether or not the reservation is for a third
party.
3rd Pty
ID
1 1-3 The Third Party ID specifies an Initiator ID for which the release was
intended. This field is meaningful only when the 3rd Pty bit is set to 1.
The drive does not release a third party reservation if this field does not
identify the Initiator currently in control of the drive.