IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive - 13.32.2.2 Individual Attribute Data Structure

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.
12Total Bytes
binary0Bh1Reserved (00h)
binary05h6Reserved (may not be 0)
binary04h1Reserved (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
binary03h1
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 flags01h2Status Flags
binary00h1Attribute ID Number (01h to FFh)
ValueOffsetByteDescription
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 Temperature194
Load/Unload Cycle Count193
Power Off Retract Count192
Gsense Error Rate191
Device Power Cycle Count12
Spin Retry Count10
Power-On Hours Count9
Seek Time Performance (*)8
Seek Error Rate7
Reallocated Sector Count5
Start/Stop Count4
Spin Up Time3
Throughput Performance (*)2
Raw Read Error Rate (*)1
Indicates that this entry in the data structure is not used0
Attribute NameID
Travelstar 60GH & 40GN hard disk drive specifications
171