Hitachi HTS725050A9A364 Datasheet download pdf (Page 153)

7K500 OEM Specification

Page 153 of 176

14.40.3

14.40.314.40.3

14.40.3

Device Attribute Thresholds Data Structure

Device Attribute Thresholds Data Structure Device Attribute Thresholds Data Structure

Device Attribute Thresholds Data Structure

The following defines the 512 bytes that make up the Attribute Threshold information. This data

structure is accessed by the host in its entirety using the S.M.A.R.T. Read Attribute Thresholds. All

multi-byte fields shown in these data structures follow the ATA/ATAPI-6 specification for byte

ordering, namely that the least significant byte occupies the lowest numbered byte address location

in the field.

The sequence of active Attribute Thresholds will appear in the same order as their corresponding

Attribute Values.

Description Bytes Offset Format Value

Data Structure Revision Number 2

00h

binary 0010h

Attribute Threshold 12

02h

(*1) (*2)

... ..

Attribute Threshold 12

15Eh

(*1) (*2)

Reserved 18

16Ah

(*3)

Vendor specific 131

17Ch

(*3)

Data structure checksum 1

1FFh

(*2)

512

Table 115 Device Attribute Thresholds Data Structure

14.40.3.1

14.40.3.114.40.3.1

14.40.3.1 Data Structure Revision Number

Data Structure Revision Number Data Structure Revision Number

Data Structure Revision Number

This value is the same as the value used in the Device Attributes Values Data Structure.

14.40.3.2

14.40.3.214.40.3.2

14.40.3.2 Individual Thresholds Data Structure

Individual Thresholds Data Structure Individual Thresholds Data Structure

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 is in the same order and correspond to the entries in the Individual Attribute Data

Structure.

Description Bytes Offset Format

Attribute ID Number (01h to FFh) 1

00h

binary

Attribute Threshold (for comparison with Attribute Values

from 00h to FFh)

01h

binary

“ ”

minimum value for normal operation

maximum value for normal operation

invalid for threshold value

“always failing” threshold value to be used

for code test purposes

Reserved (00h) 10

02h

binary

Total Bytes 12

Table 116 Individual Threshold Data Structure

1 2 ... 148 149 150 151 152 153 154 155 156 157 158 ... 175 176

Comments to this Manuals

No comments

Hitachi HTS725050A9A364 Datasheet Page 153

Comments to this Manuals

Related products and manuals for Internal hard drives Hitachi HTS725050A9A364