IBM DJSA-210 Hard Drive Specifications - Page 178

Device Attributes Data Structure, 32.2.1 Data Structure Revision Number

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13.32.2 Device Attributes Data Structure The following defines the 512 bytes that make up the Attribute Value information. This data structure is accessed by the host in its entirety using the S.M.A.R.T. Read Attribute Values subcommand. All multibyte fields shown in these data structures follow the ATA/ATAPI-5 specification for byte ordering, namely that the least significant byte occupies the lowest numbered byte address location in the field. Description Byte Offset Format Data Structure Revision Number 2 00h binary 1st Device Attribute 12 02h (*1) 2nd Device Attribute 12 0Eh (*1) 3nd Device Attribute ↕ 12 1Ah (*1) ↕ ↕ ↕ 30th Device Attribute 12 15Eh (*1) Off-line data collection status 1 16Ah (*1) Self-test execution status 1 16Bh (*1) Total time in seconds to complete off-line data collection activity 2 16Ch (*1) Current segment pointer 1 16Eh (*1) Off-line data collection capability 1 16Fh (*1) S.M.A.R.T. capability 2 170h (*1) S.M.A.R.T. device error logging capability 1 172h (*1) Self-test failure check point 1 173h (*1) Short self-test completion time in minutes 1 174h (*1) Extended self-test completion time in minutes 1 175h (*1) Reserved 12 176h Vendor specific 125 182h Data structure checksum 1 1FFh (*1) 512 (*1) - See paragraphs 13.32.2.1, 13.32.2.12, 13.32.2.2, 13.32.2.2, and13.32.2.2 for definitions of titles in the Description column. (*2) - This value varied due to actual operating condition. Value 0010h (*2) (*2) (*2) ↕ (*2) (*2) (*2) (*2) (*2) 1Bh 0003h 01h (*2) (*2) (*2) 00h 00h (*2) Figure 111. Device Attribute Data Structure 13.32.2.1 Data Structure Revision Number The Data Structure Revision Number identifies which version of this data structure is implemented by the device. This revision number will be set to 0005h. This revision number identifies both the Attribute Value and Attribute Threshold Data structures. Travelstar 32GH/30GT/20GN hard disk drive specifications 164

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13.32.2 Device Attributes Data Structure
The following defines the 512 bytes that make up the Attribute Value information. This data structure is
accessed by the host in its entirety using the S.M.A.R.T. Read Attribute Values subcommand. All multibyte
fields shown in these data structures follow the ATA/ATAPI-5 specification for byte ordering, namely that
the least significant byte occupies the lowest numbered byte address location in the field.
512
(*2)
(*1)
1FFh
1
Data structure checksum
00h
182h
125
Vendor specific
00h
176h
12
Reserved
(*2)
(*1)
175h
1
Extended self–test completion time in minutes
(*2)
(*1)
174h
1
Short self–test completion time in minutes
(*2)
(*1)
173h
1
Self–test failure check point
01h
(*1)
172h
1
S.M.A.R.T. device error logging capability
0003h
(*1)
170h
2
S.M.A.R.T. capability
1Bh
(*1)
16Fh
1
Off–line data collection capability
(*2)
(*1)
16Eh
1
Current segment pointer
(*2)
(*1)
16Ch
2
Total time in seconds to complete off–line
data collection activity
(*2)
(*1)
16Bh
1
Self–test execution status
(*2)
(*1)
16Ah
1
Off–line data collection status
(*2)
(*1)
15Eh
12
30th Device Attribute
↕
↕
↕
↕
↕
(*2)
(*1)
1Ah
12
3nd Device Attribute
(*2)
(*1)
0Eh
12
2nd Device Attribute
(*2)
(*1)
02h
12
1st Device Attribute
0010h
binary
00h
2
Data Structure Revision Number
Value
Format
Offset
Byte
Description
(*1)
–
See paragraphs 13.32.2.1, 13.32.2.12, 13.32.2.2, 13.32.2.2,
and13.32.2.2 for definitions of titles in the Description column.
(*2)
–
This value varied due to actual operating condition.
Figure 111. Device Attribute Data Structure
13.32.2.1 Data Structure Revision Number
The Data Structure Revision Number identifies which version of this data structure is implemented by the
device. This revision number will be set to 0005h. This revision number identifies both the Attribute Value
and Attribute Threshold Data structures.
Travelstar 32GH/30GT/20GN hard disk drive specifications
164