To access the redundant
controller settings, click the Redundant tab under the Configuration
Parameters panel.
Redundant Controller Communication Channel: this field is set
for display only
Seccondary Controller RS-232 Terminal: In a redundant controller
configuration, the RS-232C port on the secondary controller is normally nonfunctional.
Enable this function if you wish to use the port on a Secondary controller for
debug purpose.
Cache Synchronization on Write-Through: If controllers are
operating using the Write-Through caching mode, the Synchronized cache operation
can be manually disabled to save the system resources spent on mirroring cached
data. Disabling the sync. cache may help bring a better performance.
Note that if sync. cache is disabled, the configuration changes made through
the primary controller is still communicated to the secondary controller.
Host Bus Failover Mode: Default setting is "Shared." The "Independent" mode is often applied in situations such as cascaded SATA JBODs using redundant controller units. The Independent option allows logical drives to be presented through channel/IDs on all host ports to prevent the faults caused by host link disconnection. This option allows logical drives assigned to one controller in a redundant controller pair to be mapped to channel/IDs that are owned by the aternate controller. For more details, please refer to the Generic Operation Manual that came with your subsystem.
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