Hitachi 100GB 7200 RPM HTE721010G9SA00 User Manual

Travelstar E7K100 (SATA) Hard Disk Drive Specification

108 

The value of the General Purpose Logging Version word shall be 0001h. A value of 0000h indicates that there is no 
General Purpose Log Directory.

The logs at log addresses 80-9Fh shall each be defined as 16 sectors long.

The figure below defines the format of each of the sectors that comprise the Extended Comprehensive SMART 
error log. Error log data structure shall not include errors attributed to the receipt of faulty commands such as com-
mand codes not implemented by the device or requests with invalid parameters or in valid addresses.

The value of this version shall be 01h.  

This indicates the error log data structure representing the most recent error. If there have been no error log entries, 
it is cleared to 0. Valid values for the error log index are 0 to 4.

An error log data structure shall be presented for each of the last four errors reported by the device. These error log 
data structure entries are viewed as a circular buffer. The fifth error shall create an error log structure that replaces 
the first error log data structure. The next error after that shall create an error log data structure that replaces the 
second error log structure, etc. 

Unused error log data structures shall be filled with zeros.

Smart error log version

1

00h

Reserved

1

01h

Error log index (7:0)

1

02h

Error log index (15:8)

1

03h

1st error log data structure

124

04h

2nd error log data structure

124

80h

3rd error log data structure

124

FCh

4th error log data structure

124

178h

Device error count

2

1F4h

Reserved

9

1F6h

Data structure checksum

1

1FFh

512

1st error log data structure

18

00h

2nd error log data structure

18

12h