Seagate Exos X18 SAS Product Manual, Rev. D
55
www.seagate.com
Interface requirements
10.4
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.
10.4.1 SAS physical interface
Figure 9
shows the location of the SAS device connector J1.
Figures 10
and
11
provide the dimensions of the SAS connector.
Details of the physical, electrical, and logical characteristics are provided within this section. The operational aspects of Seagate’s SAS drives are
provided in the
SAS Interface Manual
.
Figure 9.
Physical interface
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 64 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
