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15.32.15 Self-test log data structure
The following figure defines the 512 bytes that make up the Self-test log sector. All multibyte fields shown
in these data structures are in byte ordering.
Note: n is 0 through 20
512
1FFh
1
Data structure checksum
1FDh
2
Reserved
1FCh
1
Self-test log pointer
1FAh
2
Vendor specific
...
n*18h+0Bh
15
Vendor specific
n*18h+07h
4
LBA of first failure
n*18h+06h
1
Self-test failure check point
n*18h+04h
2
Life time power on hours
n*18h+03h
1
Self-test execution status
n*18h+02h
1
Self-test number
00h
2
Data structure revision
Offset
Byte
Description
Figure 131. Self-test log data structure
The data structure contains the descriptor of Self-test that the device has performed. Each descriptor is
24 bytes long and the self-test data structure is capable of containing up to 21 descriptors.
After 21 descriptors have been recorded, the oldest descriptor will be overwritten with a new descriptor.
The self-test log pointer points to the most recent descriptor. When there is no descriptor, the value is 0.
When there is descriptor(s) the value is 1 through 21.
Deskstar 60 GXP Hard disk drive specification
173
Содержание IC35L020 - Deskstar 20 GB Hard Drive
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