Hitachi 7K320 Specifications - Page 149

ucture, 40.2.2, Individual Attribute Data Str

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14.40.2.2 7K320 (SATA) OEM Specification 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. Description Attribute ID Number (01h to FFh) Status Flags Bit 0 Pre-Failure/Advisory Bytes Offset 1 00h 2 01h Format binary bit flags Bit 1 On-line Collection Bit 2-5 Reserved (may either 0 or 1) Bit 6-15 Reserved (all 0) Attribute Value (valid values from 01h to FEh) 00h invalid for attribute value - not to be used 01h minimum value 1 03h binary 64h initial value for all attributes prior to any data collection FDh maximum value FEh value is not valid FFh invalid for attribute value - not to be used Reserved (may not be 0) Reserved (may not be 0) Reserved (00h) Total Bytes Table 114 Individual Attribute Data Structure 1 04h binary 6 05h binary 1 0Bh binary 12 Page 149 of 176

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7K320 (SATA) OEM Specification
Page 149 of 176
ucture
14.40.2.2
Individual Attribute Data Str
The following defines the 12 bytes that make up the information for each Attribute entry in the
Device Attribute Data Structure.
Description
Bytes
Offset
Format
Attribute ID Number (01h to FFh)
1
00h
binary
Status Flags
2
01h
bit flags
Bit 0 Pre-Failure/Advisory
Bit 1 On-line Collection
Bit 2-5 Reserved (may either 0 or 1)
Bit 6-15 Reserved (all 0)
Attribute Value (valid values from 01h to FEh)
1
03h
binary
00h invalid for attribute value – not to be used
01h minimum value
64h initial value for all attributes prior to any data collection
FDh maximum value
FEh value is not valid
FFh invalid for attribute value - not to be used
Reserved (may not be 0)
1
04h
binary
Reserved (may not be 0)
6
05h
binary
Reserved (00h)
1
0Bh
binary
Total Bytes
12
Table 114 Individual Attribute Data Structure