Symantec 10521146 - Network Security 7120 Administration Manual page 290

290 Advanced configuration
Establishing high availability failover
In the following example, the master node and a standby slave node form a
failover group in a cluster of three:
Symantec Network Security
provides the ability to deploy
redundant nodes to ensure
high availability.
Network Security
console
All nodes monitor the network, but only active nodes record data. If the active
node fails, the standby node immediately starts recording security events. The
standby node does not become master; the cluster operates without a master
node until a node is set to cluster master.
In a failover group of three, the third standby node continues to monitor
without recording, in case the second active node fails. This fault-tolerant
feature occurs automatically and transparently, and ensures that Symantec
Network Security remains continuously available. Do not confuse
high-availability failover with load-balancing, in which systems providing
balance through database synchronization methodology.
This section includes the following:
Configuring a failover group
■
Removing nodes from a failover group
■
Viewing incidents during failover
■
Configuring a failover group
The minimum failover group size consists of two: an active node and a standby
node. The maximum failover group size consists of five nodes: one active node
and four standby nodes.
Slave node
Slave node
Master node
Standby node