Hitachi travelstar hds723020bla642 用户手册
7K200 SATA OEM Specification
147/173
14.39.2.2
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.
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 112 Individual Attribute Data Structure
Attribute ID Numbers: Any non-zero value in the Attribute ID Number indicates an active attribute.
The device supports following Attribute ID Numbers. Those marked with (*) indicate that
corresponding Attribute Values can be either collected on-line or off-line.
corresponding Attribute Values can be either collected on-line or off-line.
ID
Attribute Name
0
Indicates that this entry in the data structure is not used
1
Raw Read Error Rate (*)
2
Throughput Performance (*)
3
Spin Up Time
4
Start/Stop Count
5
Reallocated Sector Count
7
Seek Error Rate
8
Seek Time Performance (*)
9
Power-On Hours Count
10
Spin Retry Count
12
Device Power Cycle Count
191
G Sense error rate
192
Power off retract count
193
Load/Unload cycle count
194
Device Temperature
196
Reallocation Event Count
197
Current Pending Sector Count
198
Off-Line Scan Uncorrectable Sector Count
199
Ultra DMA CRC Error Count