M2488 PRODUCT GUIDE
TAPE UNIT SCSI COMMANDS
April 1997
CG00000-011503 REV. A
4-5
4-3.2
CHANGE DEFINITION command 40h
The CHANGE DEFINITION command is used to modify the operating definition of the selected tar-
get with respect to all initiators. This command is executed even if the Magnetic Tape Unit (MTU) is
NOT READY. It is not executed if the selected LUN is nonexistent. This command is used in con-
junction with the INQUIRY command to change (and optionally save) parameters that affect the
operation of the target.
4-3.2.1
CHANGE DEFINITION CDB Description
CHANGE DEFINITION is a ten-byte command. The bytes are shown below and described in
Table 4-3. Common fields are described in paragraph 4-3.1 on page 4-4.
BITS
BYTES
7
6
5
4
3
2
1
0
0
0
1
0
0
0
0
0
0
1
LUN
Reserved
2
Reserved
Save
3
0
Definition Parameters
4
Reserved
5
6
7
8
Parameter Data Length
9
Reserved
Flag
Link
Note: Changeable fields in the CDB are shaded.
Table 4-3. CHANGE DEFINITION Field Description
BYTE
BIT
VALUE
DESCRIPTION
0
0-7
40h
Operation code.
2
0
0
1
A Save control bit of zero indicates that the target shall not save the operating definition.
A Save bit of one indicates that the target shall save the operating definition to non-volatile
memory.
This target will not apply the new parameters until a power cycle is performed, so sending
a Save bit of zero is a means of performing a parameter validity check.
3
0-6
See Table 4-4 for a description of the Definition Parameter field.
Содержание M2488
Страница 1: ...C144 E019 03EN M2488 CARTRIDGE TAPE DRIVE PRODUCT GUIDE ...
Страница 4: ......
Страница 57: ...M2488 PRODUCT GUIDE INSTALLATION INSTRUCTIONS April 1997 CG00000 011503 REV A 1 31 Figure 1 25 Replace Covers ...
Страница 64: ......
Страница 70: ...DESIGN ARCHITECTURE M2488 PRODUCT GUIDE 2 6 CG00000 011503 REV A April 1997 ...
Страница 82: ......
Страница 236: ......
Страница 351: ...M2488 PRODUCT GUIDE MAINTENANCE AND SERVICING April 1997 CG00000 011503 REV A 8 41 Figure 8 2 Interconnect Diagram ...
Страница 359: ...M2488 PRODUCT GUIDE MAINTENANCE AND SERVICING April 1997 CG00000 011503 REV A 8 49 Figure 8 8 DTC PCBA ...
Страница 366: ...MAINTENANCE AND SERVICING M2488 PRODUCT GUIDE 8 56 CG00000 011503 REV A April 1997 ...
Страница 374: ...SENSE KEYS M2488 PRODUCT GUIDE A 2 CG00000 011503 REV A April 1997 ...
Страница 480: ...DIAGNOSTIC TESTS AND ERROR CODES M2488 PRODUCT GUIDE F 80 CG00000 011503 REV A April 1997 ...
Страница 522: ...INDEX M2488 PRODUCT GUIDE Index 8 CG00000 011503 REV A April 1997 ...
Страница 524: ......
Страница 525: ...M2488 CARTRIDGE TAPE DRIVE PRODUCT GUIDE C144 E019 03EN M2488 CARTRIDGE TAPE DRIVE PRODUCT GUIDE C144 E019 03EN ...
Страница 526: ......
Страница 527: ......
Страница 528: ......