SimpleTech ZeusIOPS User Manual
Zeus
IOPS
3.5-Inch Fibre Channel Solid State Drive Product Manual Rev. 1.0
45
L
OG
S
ENSE
C
OMMAND
(4Dh)
The LOG SENSE command provides a method for the application client to retrieve statistical or other
operational information maintained by the SCSI target device about the SCSI target device or its
logical units. The command is complementary to the LOG SELECT command. The only LOG SENSE
page code supported is 0x00. The PPC and SP bits (Bits 1 and 0 of CDB Byte 1) must be zero and
the PC bits must select the cumulative values (CDB Byte 1 must be set to 0x40). Bytes 1, and 5
through 8, are not supported. The Drive will return a CHECK condition if non-zero. Byte 2 must be
0x40, as only cumulative values are supported.
operational information maintained by the SCSI target device about the SCSI target device or its
logical units. The command is complementary to the LOG SELECT command. The only LOG SENSE
page code supported is 0x00. The PPC and SP bits (Bits 1 and 0 of CDB Byte 1) must be zero and
the PC bits must select the cumulative values (CDB Byte 1 must be set to 0x40). Bytes 1, and 5
through 8, are not supported. The Drive will return a CHECK condition if non-zero. Byte 2 must be
0x40, as only cumulative values are supported.
Table 22.
Log Sense Command
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (4Dh)
1
Reserved
PPC
SP
2
PC
Page Code
3
Reserved
4
5
(MSB)
Parameter Pointer
6
(LSB)
7
(MSB)
Allocation Length
8
(LSB)
Control