Deskstar T7K500 Hard Disk Drive Specification
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The state field contains a value indicating the device state when command was issued to the device.
The value of ’x’ is vendor specific
12.42.6 Self-test log data structure
The following table defines the 512 bytes that make up the Self-test log sector. All multibyte fields shown in these
data structures follow the ATA/ATAPI-5 specifications for byte ordering.
Table 149: Self-test log data structure
Note: N is 0 through 20
The data structure contains the descriptor of the Self-test that the device has performed. Each descriptor is 24 bytes
long and the self-test data structure is capable to contain up to 21 descriptors.
After 21 descriptors has been recorded, the oldest descriptor will be overwritten with the new descriptor.
The self-test log index points to the most recent descriptor. When there is no descriptor, the value is 0. When there
are one or more descriptors, the value is 1 through 21.
Life time stamp (hours) 2 1Ch
30
Value State
x0h Unknown
x1h Sleep
x2h Standby
x3h Active/Idle
x4h S.M.A.R.T. Off-line or Self-test
x5h-xAh Reserved
xBh-xFh Vendor specific
Description Byte Offset
Data structure revision 2 00h
Self-test number 1 n*18h+02h
Self-test execution status 1 n*18h+03h
Life time power on hours 2 n*18h+04h
Self-test failure check point 1 n*18h+06h
LBA of first failure 4 n*18h+07h
Vendor specific 15 n*18h+08h
...
Vendor specific 2 1FAh
Self-test log pointer 1 1FCh
Reserved 2 1FDh
Data structure checksum 1 1FFh
512
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