User guide

Licensed Customer Confidential Planning RedirectorSink/RedirectorController Placement
Email Continuity Administrator Guide version 6.5 (1st ed.) 37
As part of your installation, Support helps you install a single RedirectorController
in your environment. You can install additional controllers by running setup and
choosing the secondary controller option.
When planning for secondary controllers, consider the following:
Geographic diversity—If Exchange servers are available in multiple locations,
placing controllers in multiple locations helps protect against catastrophic failure
or power outage in a single location.
Figure 2-5 RedirectorControllers in Multiple Locations
WAN topology—Where loss of wide-area network (WAN) links, firewalls, or dial-
on-demand links may isolate servers from available controllers, strategic
placement of secondary controllers allows RedirectorSinks to obtain updated
routing information.