DLT4000 SCSI Interface
8-34 DLT4000/DLT4500/DLT4700 Cartridge Tape Subsystem
8.4.8 LOG SENSE (4Dh)
Bit
7
6
5
4
3
2
1
0
0
Operation Code (4Dh)
1
Logical Unit Number (0)
Reserved
PPC
SP(0)
Byte
2
PC
Page Code
3
Reserved
4
Reserved
5
(MSB)
6
Parameter Pointer
(LSB)
7
(MSB)
8
Allocation Length
(LSB)
9
Unused
Reserved
Flag
Link
Figure 8-17
LOG SENSED CDB
LOG SENSE allows the host to retrieve statistical information maintained by the
device about its own hardware or the installed media. It is a complementary command
to LOG SELECT.
PPC
The Parameter Pointer Control bit must be zero. A Parameter Pointer Control bit of
zero indicates that the parameter data requested from the device will start with the
parameter code specified in the Parameter Pointer field and return the number of bytes
specified in the Allocation Length field in ascending order of parameter codes from
the specified log page. A PPC bit of zero and a Parameter Point field of zero causes all
available parameter data for that page code to be returned to the initiator.
_________________________ NOTE ____________________________
The current implementation of the Read/Write Compression Page does
not support a parameter pointer other than zero.
___________________________________________________________
If PPC bit is set or the Parameter Pointer is larger than the highest numbered
parameter on the page, then the target will terminate the command with CHECK
CONDITION status. The sense key is set to ILLEGAL REQUEST and the additional
sense code is set to INVALID FIELD IN CDB.
If the target does not support a parameter code within this page then it will not return
any data associated with this parameter.
Summary of Contents for DLT 4700
Page 1: ...DLTTM 4000 DLTTM 4500 DLTTM 4700 Cartridge Tape Subsystem Product Manual...
Page 2: ......
Page 160: ...Firmware Update From Tape 7 18 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 215: ...DLT4000 SCSI Interface DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem 8 55...
Page 304: ...DLT4000 SCSI Interface 8 144 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 342: ...Sense Key Information C 6 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 359: ...Index DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem 7...
Page 360: ...Index 8 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...