The value of the SMART Logging Version word is set to 01h. Then the drive supports multi-sector SMART logs. In addition, if the drive supports multi-sector logs, then the logs at log addresses 80-9Fh shall each be defined as 16 sectors long.

10.8.42.6.2 Summary error log sector

The following Table defines the 512 bytes that make up the SMART summary error log sector.

 

SMART summary error log sector

Byte

Descriptions

0

SMART error log version

1

Error log index

2-91

First error log data structure

92-181

Second error log data structure

182-271

Third error log data structure

272-361

Fourth error log data structure

362-451

Fifth error log data structure

452-453

Device error count

454-510

Reserved

511

Data structure checksum

10.8.42.6.2.1 Error log version

The value of the SMART error log version byte is set to 01h.

10.8.42.6.2.2 Error log data structure

An error log data structure will be presented for each of the last five errors reported by the device. These error log data structure entries are viewed as a circular buffer. That is, the first error will create the first error log data structure; the second error, the second error log structure; etc. The sixth error will create an error log data structure that replaces the first error log data structure; the seventh error replaces the second error log structure, etc. The error log pointer indicates the most recent error log structure. If fewer than five errors have occurred, the unused error log structure entries will be zero filled. The following table describes the content of a valid error log data structure.

 

Error log data structure

Byte

Descriptions

n –n+11

First command data structure

N+12 –n+23

Second command data structure

N+24 –n+35

Third command data structure

N+36 – n+47

Fourth command data structure

N+48 – n+59

Fifth command data structure

N+60 – n+89

Error data structure

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