Reference Guide

52 Understanding Your Failover Cluster
resource group to fail over. In this example, node 1 owns applications A, B, and
C. If node 1 fails, applications A, B, and C fail over to cluster nodes 2, 3, and 4.
Configure the applications similarly on nodes 2, 3, and 4.
When implementing multiway failover, configure failback to avoid
performance degradation. See "Understanding Your Failover Cluster" on
page 37 for more information.
Figure 4-3. Example of a Four-Node Multiway Failover Configuration
Failover Ring
Failover ring is an active/active policy where all running applications migrate
from the failed node to the next preassigned node in the Preferred Owners
List. If the failing node is the last node in the list, the failed node’s
applications fail over to the first node.
While this type of failover provides high availability, ensure that the next
node for failover has sufficient resources to handle the additional workload.
Figure 4-4 shows an example of a failover ring configuration.
Table 4-10. Example of a Four-Node Multiway Failover Configuration
Application Failover Order in the Preferred Owners List
A Node 2
B Node 3
C Node 4
c
l
uster
node 1
c
l
uster
node 2
cluster node 4 cluster node 3
application A
application B
application C