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62 Constellation.2 SAS Product Manual, Rev. H
12.4 Miscellaneous operating features and conditions
Table 11 lists various features and conditions. A “Y” in the support column indicates the feature or condition is
supported. An “N” in the support column indicates the feature or condition is not supported.
Table 11: Miscellaneous features
Supported Feature or condition
N Automatic contingent allegiance
N Asynchronous event notification
N Synchronized (locked) spindle operation
Y Segmented caching
N Zero latency read
Y Queue tagging (up to 128 queue tags supported)
Y Deferred error handling
Y Parameter rounding (controlled by Round bit in Mode Select page 0)
Y Reporting actual retry count in Extended Sense bytes 15, 16, and 17
N Adaptive caching
Y SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes
Table 12: Miscellaneous status
Supported Status
Y Good
Y Check condition
Y Condition met/good
Y Busy
Y Intermediate/good
Y Intermediate/condition met/good
Y Reservation conflict
Y Task set full
N ACA active
N ACA active, faulted initiator