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Western Digital Hard Disk Drive OEM Specification
9.18.2.3.3 Format of SCT Status Response
Status Response format version number
Manufacturer’s vendor specific implementation version
number
Highest level of SCT Technical Report supported
Bit 0 : Segment Initialized Flag
If this bit is set to 1, an SCT Write Same command
write to all LBAs of the drive has completed without
error. This bit shall be cleared to 0 when any user LBA
is written, even if write cache is enabled. This bit is
else cleared if the capacity of the drive is changed via
SETMAX, SETMAX EXT or DCO. This bit is preserved
through a power cycle.
Bit 1-31 : Reserved
0 = Active waiting for a command
1 = Stand-by
2 = Sleep
3 = DST executing in background
4 = SMART ODC executing in background
5 = SCT executing in background
Status Of last SCT command issued. FFFFh if SCT
command executing in background.
Action code of last SCT command issued. If the
Extended Status Code is FFFFh, this is the Action
Code of the command that is current executing.
Function code of last SCT command issued. If the
Extended Status Code is FFFFh, this is the Function
Code of the command that is current executing.
Current LBA of SCT command execution in
background. If there is no command currently
executing in the background, this field is undefined.
Current HDA temperature in degrees Celsius. This is a
2’s complement number. 80h indicates that this value
is invalid.
Minimum HDA temperature in degrees Celsius. This is
a 2’s complement integer. 80h indicates that this value
is invalid.
Maximum HDA temperature in degrees Celsius. This is
a 2’s complement number. 80h indicates that this
value is invalid.
Minimum HDA temperature in degrees Celsius seen
for the life of the device. This is a 2’s complement
integer. 80h indicates that this value is invalid.
Maximum HDA temperature in degrees Celsius seen
for the life of the drive. This is a 2’s complement
number. 80h indicates that this value is invalid.
Table 58 Data Format of SCT Status Response -1