Hitachi HDS728080PLAT20 Specifications - Page 221
Individual Thresholds Data Structure
UPC - 829686000094
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The sequence of active Attribute Thresholds will appear in the same order as their corresponding Attribute Values. Table 147: Device Attribute Thresholds Data Structure Description Byte Data Structure Revision Number 2 1st Device Attribute 12 ... .. 30th Device Attribute 12 Reserved 18 Vendor specific 131 Data structure checksum 1 512 Offset 00h 02h 15Eh 16Ah 17Ch 1FFh Value 0010h 00h 00h 12.42.3.1 Data Structure Revision Number This value is the same as the value used in the Device Attributes Values Data Structure. 12.42.3.2 Individual Thresholds Data Structure The following defines the 12 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 are in the same order and correspond to the entries in the Individual Attribute Data Structure. Table 148: Individual Threshold Data Structure Description Attribute ID Number (01h to FFh) Attribute Threshold Reserved (00h) Total Bytes Byte 1 1 10 12 Offset 00h 01h 02h 12.42.3.3 Attribute ID Numbers Attribute ID Numbers supported by the device are the same as Attribute Values Data Structures. 12.42.3.4 Attribute Threshold These values are preset at the factory and are not meant to be changeable. 12.42.3.5 Data Structure Checksum The Data Structure Checksum is the two's complement of the result of a simple 8-bit addition of the first 511 bytes in the data structure. Deskstar 7K80 Hard Disk Drive Specification 217