Table 143: Device Attribute Thresholds Data Structure; Table 144: Individual Threshold Data Structure - Hitachi HTS542525K9SA00 Specifications

The sequence of active Attribute Thresholds will appear in the same order as their corresponding Attribute Values.
Table 144: Device Attribute Thresholds Data Structure
Description
Data Structure Revision Number
1st Device Attribute
...
30th Device Attribute
Reserved
Vendor specific
Data structure checksum
12.42.3.1 Data Structure Revision Number
This value is the same as the value used in the Device Attributes Values Data Structure.
12.42.3.2 Individual Thresholds Data Structure
The following defines the 12 bytes that make up the information for each Threshold entry in the Device Attribute
Thresholds Data Structure. Attribute entries in the Individual Threshold Data Structure are in the same order and
correspond to the entries in the Individual Attribute Data Structure.
Table 145: Individual Threshold Data Structure
Description
Attribute ID Number (01h to FFh)
Attribute Threshold
Reserved (00h)
Total Bytes
12.42.3.3 Attribute ID Numbers
Attribute ID Numbers supported by the device are the same as Attribute Values Data Structures.
12.42.3.4 Attribute Threshold
These values are preset at the factory and are not meant to be changeable.
12.42.3.5 Data Structure Checksum
The Data Structure Checksum is the two's complement of the result of a simple 8-bit addition of the first 511 bytes
in the data structure.
Byte Offset
2
12
..
12 15Eh
18 16Ah
131 17Ch
1 1FFh
512
Deskstar 7K160 Hard Disk Drive Specification
239
Value
00h 0010h
02h
00h
00h
Byte Offset
1 00h
1 01h
10 02h
12