IBM DJSA-210 Hard Drive Specifications - Page 183

Device Attribute Thresholds data structure

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13.32.2.10 Self-test failure check point This byte indicates the section of self-test where the device detected a failure. 13.32.2.11 Self-test completion time These bytes are the minimum time in minutes to complete the self-test. 13.32.2.12 Data 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. 13.32.3 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 multibyte fields shown in these data structures follow the ATA/ATAPI-5 specification for byte ordering. This means 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 Data Structure Revision Number 1st Device Attribute ... ... 30th Device Attribute Reserved Vendor specific Data structure checksum Byte 2 12 .. .. 12 18 131 1 512 (*1) - See the following definitions (*2) - Value varied by actual operating condition Offset Format 00h binary 02h (*1) Value 0010h (*2) 15Eh 16Ah 17Ch 1FFh (*1) (*2) 00h 00h (*2) Figure 114. Device Attribute Thresholds Data Structure 13.32.3.1 Data Structure revision number This value is the same as the value used in the Device Attributes Values Data Structure. 13.32.3.2 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. Description Byte Attribute ID Number (01h to FFh) 1 Travelstar 32GH/30GT/20GN hard disk drive specifications 169 Offset 00h Format binary

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13.32.2.10 Self-test failure check point
This byte indicates the section of self-test where the device detected a failure.
13.32.2.11 Self-test completion time
These bytes are the minimum time in minutes to complete the self-test.
13.32.2.12 Data 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.
13.32.3 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 multibyte fields
shown in these data structures follow the ATA/ATAPI-5 specification for byte ordering. This means 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.
512
(*2)
1FFh
1
Data structure checksum
00h
17Ch
131
Vendor specific
00h
16Ah
18
Reserved
(*2)
(*1)
15Eh
12
30th Device Attribute
..
...
..
...
(*2)
(*1)
02h
12
1st Device Attribute
0010h
binary
00h
2
Data Structure Revision Number
Value
Format
Offset
Byte
Description
(*1)
–
See the following definitions
(*2)
–
Value varied by actual operating condition
Figure 114. Device Attribute Thresholds Data Structure
13.32.3.1 Data Structure revision number
This value is the same as the value used in the Device Attributes Values Data Structure.
13.32.3.2 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.
binary
00h
1
Attribute ID Number (01h to FFh)
Format
Offset
Byte
Description
Travelstar 32GH/30GT/20GN hard disk drive specifications
169