Read Stream Error Log; Table 112. Extended Self-Test Log Descriptor Entry; Table 113. Read Stream Error Log - Hitachi 7K400 - Deskstar Hard Drive Specifications

12.20.3.1 Self-test log data structure revision number
The value of this revision number shall be 01h.
12.20.3.2 Self-test descriptor index
This indicates the most recent self-test descriptor. If there have been no self-tests, this is set to zero. Valid values for
the Self-test descriptor index are 0 to 18.
12.20.3.3 Extended Self-test log descriptor entry
The content of the self-test descriptor entry is shown below.
Table 113: Extended Self-test log descriptor entry
Self-test number
Self-test execution status
Power-on life timestamp in hours
Self-test failure check point
Failing LBA (7:0)
Failing LBA (15:8)
Failing LBA (23:16)
Failing LBA (31:24)
Failing LBA (39:32)
Failing LBA (47:40)
Vendor specific

12.20.4 Read Stream Error log

Table 111 defines the format of the Read Stream Error log. Entries are placed into the Read Stream Error log only
when the SE bit is set to one in the Status Register. The 512 bytes returned shall contain a maximum of 31 error
entries. The Read Stream Error Count shall contain the total number of Read Stream Errors detected since the last
successful completion of the Read Log Ext command with LBA Low register set to 22h. This error count may be
greater than 31, but only the most recent 31 errors are represented by entries in the log. If the Read Stream Error
Count reaches the maximum value that can be represented, after the next error is detected the Read Stream Error
Count shall remain at the maximum value. After successful completion of a Read Log Ext command with the LBA
Low Register set to 22h, the Read Stream Error Log shall be reset to a power-on or hardware reset condition, with
the ErrorLog Index and Read Stream Error Count cleared to zero. The Read Stream Error Log is not preserved
across power cycles and hardware reset.
Read Stream Error Log
Table 114:
Description
Structure Version
Error Log Index
Read Stream Error Log Count
Reserved
Read Stream Error Log Entry #1
Read Stream Error Log Entry #2
...
Read Stream Error Log Entry #31
Description
Deskstar 7K400 Hard Disk Drive Specification
156
Bytes Offset
1 00h
1 01h
2 02h
1 04h
1 05h
1 06h
1 07h
1 08h
1 09h
1 0AH
15 0BH
26
Bytes Offset
1 00h
1 01h
2 02h
12 04h
16 10h
16 20h
16 1F0h
512