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5.44.4 S.M.A.R.T. Log Directory
The following table defines the 512 bytes that make up the S.M.A.R.T. Log Directory. The S.M.A.R.T. Log Direc-
tory is S.M.A.R.T. Log Address zero and is defined as one sector long.
Table 97: S.M.A.R.T. Log Directory
Description
S.M.A.R.T. Logging Version
Number of sectors in the log at log address 1
Reserved
Number of sectors in the log at log address 2
Reserved
...
Number of sectors in the log at log address 255 1
Reserved
The value of the S.M.A.R.T. Logging Version word shall be 01h. The logs at log addresses 80-9Fh shall each be
defined as 16 sectors long.
5.44.5 S.M.A.R.T. summary error log sector
The following figure defines the 512 bytes that make up the SMART summary error log sector. All multibyte fields
shown in this data structure follow the ATA/ATAPI-7 specifications for byte ordering.
Table 98: S.M.A.R.T. summary error log sector
Description
S.M.A.R.T. error log version
Error log pointer
1st error log data structure
2nd error log data structure
3rd error log data structure
4th error log data structure
5th error log data structure
Device error count
Reserved
Data structure checksum
5.44.5.1 S.M.A.R.T. error log version
This value is set to 01h.
5.44.5.2 Error log pointer
This points to the most recent error log data structure. Only values 1 through 5 are valid.
5.44.5.3 Device error count
This field contains the total number of errors. The value will not roll over.
Byte
1
1
90
90
90
90
90
2
57
1
512
Deskstar 7K500 Hard Disk Drive Serial ATA Addendum
148
Byte
2
00h
1
02h
1
03h
1
04h
1
05h
...
...
1FEh
1
1FFH
512
Offset
00h
01h
02h
5Ch
B6h
110h
16Ah
1C4h
1C6h
1FFh
Offset
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