Table 230 Device Attribute Data Structure - Western Digital Ultrastar DC HC310 Specifications

11.51.2 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 SMART Read Attribute Values subcommand. All multi-byte fields shown in these
data structures are in byte ordering, namely that the least significant byte occupies the lowest numbered byte
address location in the field.
Description
Data Structure Revision Number
st
1 Device Attribute
...
...
th
30 Device Attribute
Off-line data collection status
Self-test execution status
Total time in seconds to complete off-line data collection activity
Vender specific
Off-line data collection capability
SMART capability
SMART device error logging capability
Self-test failure check point
Short self-test completion time in minutes
Extended self-test completion time in minutes. If 0FFh, use bytes 177h and
178h for completion time.
Reserved
Extended self-test completion time in minutes. (word)
Reserved
Vendor specific
Data structure checksum

Table 230 Device Attribute Data Structure

11.51.2.1 Data Structure Revision Number
The Data Structure Revision Number identifies which version of this data structure is implemented by the device.
This revision number identifies both the Attribute Value and Attribute Threshold Data structures.
Western Digital Hard Disk Drive OEM Specification
267
Bytes Offset Value
2 00h 0010h
12 02h
..
..
12 15Eh
1 16Ah
1 16Bh
2 16Ch
1 16Eh
1 16Fh 1Bh
2 170h 0003h
1 172h 01h
1 173h
1 174h
1 175h
1 176h
2 177h
9 179h
125 182h
1 1FFh
512