Hitachi HDS728080PLAT20 Specifications - Page 217
Device Attribute Data Structure
UPC - 829686000094
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12.42.2 Device Attribute 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 are in byte ordering, that is, the least significant byte occupies the lowest numbered byte address location in the field. Table 145: Device Attribute Data Structure Description Byte Data Structure Revision Number 2 1st Device Attribute 12 ... 30th Device Attribute 12 Off-line data collection status 1 Self-test execution status 1 Total time in seconds to complete off-line data 2 collection activity Current segment pointer 1 Off-line data collection capability 1 S.M.A.R.T. capability 2 S.M.A.R.T. device error logging capability 1 Self-test failure check point 1 Short self-test completion time in minutes 1 Extended self-test completion time in minutes 1 Reserved 12 Vendor specific 125 Data structure checksum 1 512 Offset 00h 02h Format binary (*1) Value 0010h 15Eh 16Ah 16Bh 16Ch 16Eh 16Fh 170h 172h 173h 174h 175h 176h 182h 1FFh (*1) (*1) (*1) (*1) (*1) (*1) (*1) (*1) (*1) (*1) (*1) 1Bh 0003h 01h (*1) 12.42.2.1 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. 12.42.2.2 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. Table 146: Individual Attribute Data Structure Description Attribute ID Number (01h to FFh) Status Flags Attribute Value (valid values from 01h to FDh) Vendor Specific Total Bytes Byte 1 2 1 8 12 Offset 00h 01h 03h 04h Deskstar 7K80 Hard Disk Drive Specification 213