Chapter 4 SCSI Commands
RESERVE UNIT Command (16h)
DLT-S4 Interface Reference Guide
320
Table 177
RESERVE (10)
ID
Only Parameter List — Data
Format
RESERVE UNIT Command (16h)
4
The
RESERVE UNIT
command reserves the specified tape drive for the
exclusive use of the requesting initiator or for another specified SCSI
device.
Figure 160
RESERVE UNIT
Command Descriptor Block
—
Data Format
Bit
7
6
5
4
3
2
1
0
Byte
0 — 7
(MSB)
Third Party Device ID
(LSB)
Note:
This command has been made obsolete in the latest version of
SCSI-3 and should not be used with any new implementations.
The tape drive supports this command for legacy applications
only.
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation Code (16h)
1
Logical Unit Number
3rdPty
Third Party Device ID
Reserved
2 — 4
Reserved
5
Control