IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive, Specifications

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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.
12 Total Bytes
binary 0Bh 1 Reserved (00h)
binary 05h 6 Reserved (may not be 0)
binary 04h 1 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 03h 1
Attribute Value (valid values from 01h to
FEh)
Bit 6-15 Reserved (all 0)
Bit 2-5 Reserved (may be either 0 or 1)
Bit 1 On-line Collection
Bit 0 Pre-Failure/Advisory
bit flags 01h 2 Status Flags
binary 00h 1 Attribute ID Number (01h to FFh)
Value Offset Byte Description
Figure 124. Individual Attribute Data Structure
Attribute ID Numbers: Any nonzero 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.
Device Temperature 194
Load/Unload Cycle Count 193
Power Off Retract Count 192
Gsense Error Rate 191
Device Power Cycle Count 12
Spin Retry Count 10
Power-On Hours Count 9
Seek Time Performance (*) 8
Seek Error Rate 7
Reallocated Sector Count 5
Start/Stop Count 4
Spin Up Time 3
Throughput Performance (*) 2
Raw Read Error Rate (*) 1
Indicates that this entry in the data structure is not used 0
Attribute Name ID
Travelstar 60GH & 40GN hard disk drive specifications
171