IBM DTCA-24090 Hard Drive Specifications - Page 156

Data Structure Revision Number, 30.2.2, Individual Attribute Data Structure

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Description Bytes Offset Format Data Structure Revision Number 2 00h binary 1st Device Attribute 12 02h (*1) ... .. ... .. 30th Device Attribute 12 15Eh (*1) Off line data collection status 1 16Ah (*1) Total segments required for off line data collection 1 16Bh (*1) Total time in seconds to complete next segment 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) Reserved 16 172h Vendor specific 125 182h Data structure checksum 1 1FFh 512 Value 0005h (*2) (*2) (*2) 07h (*2) (*2) 05h 03h (*3) (*3) (*2) (*1) See following definitions (*2) Value varied by actual operating condition (*3) Filled with 00h Figure 95. Device Attribute Data Structure 12.30.2.1 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. 12.30.2.2 Individual Attribute Data Structure The following defines the 12 bytes that make up the information for each Attribute entry in the Device Attribute Data Structure. 148 OEM Specifications of DTCA-2xxxx 2.5 inch H D D

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Description
Bytes Offset
Format
Value
Data Structure Revision Number
2
00h
binary
0005h
1st Device Attribute
12
02h
(*1)
(*2)
...
..
...
..
30th Device Attribute
12
15Eh
(*1)
(*2)
Off line data collection status
1
16Ah
(*1)
(*2)
Total segments required for
1
16Bh
(*1)
07h
off line data collection
Total time in seconds to
2
16Ch
(*1)
(*2)
complete next segment
Current segment pointer
1
16Eh
(*1)
(*2)
Off line data collection capability
1
16Fh
(*1)
05h
S.M.A.R.T. capability
2
170h
(*1)
03h
Reserved
16
172h
(*3)
Vendor specific
125
182h
(*3)
Data structure checksum
1
1FFh
(*2)
512
(*1)
See following definitions
(*2)
Value varied by actual operating condition
(*3)
Filled with 00h
Figure 95. Device Attribute Data Structure
12.30.2.1
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.
12.30.2.2
Individual Attribute Data Structure
The following defines the 12 bytes that make up the information for each Attribute entry in the Device Attri-
bute Data Structure.
148
OEM Specifications of DTCA-2xxxx 2.5 inch HDD