SGPIO Protocol Layer: Definition of The 3 Bits
The 3 bits per drive is illustrated and interpreted as follows:
The first bit (ODn.0) is exclusively used to represent Activity. The second and third bits; Locate (ODn.1) and Fail (ODn.2) are directly used to represent a locate and fail state of the drive.
| ODn.0 | ODn.1 | ODn.2 |
|---|---|---|
| Activity | Locate | Fail |
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