Figure 112. Individual Attribute Data Structure - IBM DJSA-210 - Travelstar 10 GB Hard Drive Specifications

13.32.2.2 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
Attribute ID Number (01h to FFh)
Status Flags
Bit 0 Pre–Failure/Advisory
Bit 1 On–line Collection
Bit 2–5 Reserved (may either 0
Bit 6–15 Reserved (all 0)
Attribute Value (valid values from
to FEh)
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)
Reserved (may not be 0)
Reserved (00h)
Total Bytes

Figure 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. 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 32GH/30GT/20GN hard disk drive specifications
Byte Offset
1 00h
2 01h
01h
1 03h
1 04h
6 05h
1 0Bh
12
165
Value
binary
bit flags
binary
binary
binary
binary