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Chapter 7: Configuration Parameters

Click Default to restore the default values for both thresholds.

Click Cancel to cancel this action and go back to the Threshold page in

Configuration Parameter window.

7.7 Redundant Controller Settings

This sub-window contains configuration options related to redundant

controller configurations. (See Figure 7-9) This Redundant page only

displays if your controller/subsystem comes with dual-redundant RAID

controllers.

Figure 7-9: The Redundant Page

Each option is executed by a two-step procedure. Click to select a desired

value from the pull-down menu, and then click Apply for the configuration

to take effect.

♦ Secondary 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 for debugging purposes.

NOTE:

Access to the Secondary controller only allows you to see controller

settings. In a redundant configuration, configuration changes have to be

made through the Primary controller.

♦ Periodic Cache Flush Time: If redundant controllers work with

Write-T

Back caching, it is necessary to synchronize the unfinished

writes in both controllers’ memory. Cache synchronization lets each

controller keep a replica of the unfinished writes on its partner, so

Redundant Controller Settings 7-11

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