Seagate Medalist ST3636A Product Manual page 81

Command Set
Individual Threshold Data Structure
The following defines the twelve bytes that make up the information for each
Threshold entry in the Device Attribute Thresholds Data Structure. Attribute
entries in the Individual Threshold Data Structure must be in the same order
and correspond to the entries in the Individual Attribute Data Structure.
Table 7-4 - Individual Threshold Data Structure
Description
Attribute ID Number
Attribute Threshold (for comparison with Attribute
Reserved
Attribute ID Numbers
The Attribute ID Numbers must match the ID numbers in the Attribute Data
Structure. Any non-zero value in the Attribute ID Number indicates an active
attribute.
Attribute Threshold
These values are set at the factory and are not changeable in the field.
Data Structure Checksum
The Data Structure Checksum is the two's complement of the result of a simple
eight-bit addition of the first 511 bytes in the data structure.
Technical Reference Manual
values from 00 hex to FF hex)
00 hex: "always passing" threshold value to be
used for code test purposes
01 hex: minimum value for normal operation
64 hex: maximum value for normal operation
FD hex: maximum value
FE hex: invalid for threshold value-not to be used.
FF hex: "always failing" threshold value to be
used for code test purposes
Total Bytes
Chapter 7
Bytes Format Type
1 binary Rd only
1 binary Rd only
10 binary Rd only
12
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