IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive - Figure 119. Individual Attribute Data Structure

13.33.2.2 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.
12
Total Bytes
binary
0Bh1
Reserved (00h)
binary
05h6
Reserved (may not be 0)
binary
04h1
Reserved (may not be 0)
FFh invalid for attribute value
- not to be used
FEh value is not valid
FDh maximum value
64h initial value for all
attributes prior to any data
collection
01h minimum value
00h invalid for attribute value
- not to be used
binary
03h1
Attribute Value (valid values from 01h
to FEh)
Bit 6-15 Reserved (all 0)
Bit 2-5 Reserved (may either 0
Bit 1 On-line Collection
Bit 0 Pre-Failure/Advisory
bit flags
01h2
Status Flags
binary00h1Attribute ID Number (01h to FFh)
ValueOffsetByteDescription
Figure 119. 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. The names marked with (*) indicate that the correspond-
ing 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
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
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