5K320 SATA OEM Specification

Description

Bytes

Offset

Attribute ID Number (01h to FFh)

1

00h

Attribute Threshold (for comparison with Attribute Values

1

01h

from 00h to FFh)

 

 

 

 

 

 

Format

binary

binary

00h -

“always passing” threshold value to be

 

used for code test purposes

 

 

01h -

minimum value for normal operation

 

 

 

FDh -

maximum value for normal operation

 

 

 

FEh -

invalid for threshold value

 

 

 

FFh -

“always failing” threshold value to be used

for code test purposes

 

Reserved (00h)

 

Total Bytes

 

 

 

 

 

 

 

 

 

 

 

10

02h

12

 

binary

Table 116 Individual Threshold Data Structure

14.40.3.3Attribute ID Numbers

Attribute ID Numbers supported by the device are the same as Attribute Values Data Structures.

14.40.3.4Attribute Threshold

These values are preset at the factory and are not meant to be changeable. However, the host might use “ S.M.A.R.T. Write Attribute Threshold” subcommand to override these preset values in the Threshold sectors.

14.40.3.5Data Structure Checksum

The Data Structure Checksum is the 2’s compliment of the result of a simple 8-bit addition of the first 511 bytes in the data structure.

14.40.4S.M.A.R.T. Log Directory

Following table defines the 512 bytes that make up the S.M.A .R .T . L og Directory. The S.M .A.R.T. Log Directory is on S.M.A .R.T . Log Address zero and is defined as one sector long.

Description

Bytes

Offset

S.M.A.R.T. Logging Version

2

00h

Number of sectors in the log at log address 1

1

02h

Reserved

1

03h

Number of sectors in the log at log address 2

1

04h

Reserved

1

05h

Number of sectors in the log at log address 255

1

1FEh

Reserved

1

1FFh

 

512

 

Table 117 SMART Log Directory

The value of the S .M.A.R.T. Logging Version word shall be 01h. The logs at log addresses 80-9Fh are defined as 16 sectors long.

14.40.5S.M.A.R.T. error log sector

The following defines the 512 bytes that make up the S.M.A.R.T. error log sector. All multi-byte

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Hitachi HTS543212L9SA00 manual 14.40.4 S.M.A.R.T. Log Directory, 14.40.5 S.M.A.R.T. error log sector, Attribute ID Numbers