Dell MD3000i Guide de dépannage télécharger pdf (Page 52)

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

uster

node 1

uster

node 2

cluster node 4 cluster node 3

application A

application B

application C

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 75 76

Pas de commentaire

Dell MD3000i Guide de dépannage Page 52