5.3 Host Commands
•Data format version number
The data format version number indicates the version number of the data format of the device attribute values or insurance failure thresholds. The data format version numbers of the device attribute values and insurance failure thresholds are the same. When a data format is changed, the data format version numbers are updated.
•Attribute ID
The attribute ID is defined as follows:
Attribute ID | Attribute name |
|
|
0 | (Indicates unused attribute data.) |
|
|
1 | Read error rate |
|
|
2 | Throughput performance |
|
|
3 | Spin up time |
|
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4 | Start/stop count |
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5 | |
|
|
7 | Seek error rate |
|
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8 | Seek time performance |
|
|
9 | |
|
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10 | Number of retries made to activate the spindle motor |
|
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12 | Number of |
|
|
13 to 198 | (Reserved) |
|
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199 | Ultra ATA CRC error rate |
|
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200 | Write error rate |
|
|
201 to 255 | (Unique to vendor) |
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•Status Flag
Bit | Meaning |
|
|
0 | If this bit 1, it indicates that if the attribute exceeds the threshold, |
| it is the attribute covered by the drive warranty. |
|
|
1 | If this bit is 1 (0), it indicates the attribute only updated by an on- |
| line test |
|
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2 | If this bit 1, it indicates the attribute that represents performance. |
|
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3 | If this bit 1, it indicates the attribute that represents an error rate. |
|
|
4 | If this bit 1, it indicates the attribute that represents the |
| number of occurrences. |
|
|
5 | If this bit 1, it indicates the attribute that can be collected/saved |
| even if the drive fault prediction function is disabled. |
|
|
6 to 15 | Reserve bit |
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|
