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66
11.4
ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D
SCSI bus conditions
and miscellaneous features supported
Asynchronous SCSI bus conditions supported by the drive are listed in Table
11. These conditions cause the SCSI device to perform certain actions and
can alter the phase sequence. Other miscellaneous operating features
supported are also listed here.
Table 11. SCSI bus conditions and other miscellaneous features
Conditions or feature
Adaptive caching
Arbitrating system
Asynchronous data transfer
Asynchronous event notification
Attention condition
Contingent allegiance condition
Deferred error handling
Differential interface circuits available
Disconnect/reconnect
Parameter rounding
(controlled by round bit in Mode Select page 0)
Queue tagging (up to 64 queue tags supported)
Reporting actual retry count
in extended sense bytes 15,16, and 17
Reset condition
Segmented caching
SMP = 1 in Mode Select command needed to save
RPL and rotational offset bytes (in Table 5.2.1-25
of SCSI-2 Interface Product Manual, Vol. 2).
Synchronized (locked) spindle operation
Synchronous data transfer
Zero latency read
Status supported
Busy
Check condition
Condition met/good
Good
Intermediate/condition met/good
Intermediate/good
Queue full
Reservation conflict
Supported by
ASA I
ASA I
ASA II
SCSI-1 SCSI-2 SCSI-2
N
N
N
Y
Y
Y
Y
Y
Y
N
N
N
Y
Y
Y
N
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
ASA I
ASAI
ASAII
SCSI-1 SCSI-2 SCSI-2
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
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