IBM DJSA-205, Specifications

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13.32.5 Self-test log data structure
The following 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.
512
1FFh 1 Data structure checksum
1FDh 2 Reserved
1FCh 1 Self-test log pointer
1FAh 2 Vendor specific
...
n*18h+08h 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 120. Self-test log data structure
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 pointer points to the most recent descriptor. When there is no descriptor the value is 0.
When there are descriptor(s) the value is 1 through 21.
Travelstar 32GH/30GT/20GN hard disk drive specifications
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