Server Failover Configuration; Introduction To Server Failover; How Server Failover Works - 3Com 3CR15600 - Enterprise Management Suite Getting Started Manual

4
Introduction to
Server Failover
How Server Failover
Works
S F
ERVER AILOVER
C
ONFIGURATION
This chapter explains how Server Failover works and how to set up
and configure two EMS servers to operate in Server Failover mode.
Before you begin configuring your two servers to operate in Server
Failover mode you need to refer to the instructions in
Initial Setup" on page 55
This chapter contains the following topics:

Introduction to Server Failover

■
Server Failover Concepts
■
Setting Up Server Failover
■
Running in Server Failover Mode
■
Server Failover provides a resiliency solution for your network
management needs where a quick failover from an Active Server to a
Dormant Server is required. In the event of the Active Server failing, the
Dormant Server will take over the EMS operations and allow clients to
connect and carry out EMS operations as usual.
The Active server operates as a traditional EMS server. The Dormant
server opens a connection to the Active server to check the server is
available and to keep up-to-date with the Active server.
Both servers share a common database. The internal embedded
database is not compatible with Server Failover. If you wish to use
Server Failover you will need to use an external database.
Both servers also share a common set of files and directories which
removes the need for file synchronization. You can specify a "base
for both servers.
"Installation and