Install Guide
Conguring High Availability database clustering
for WDM
High-availability clusters (also known as HA clusters or failover clusters) are groups of computers that support server applications that can
be reliably utilized with a minimum down-time. They operate by harnessing redundant computers in groups or clusters that provide
continued service when system components fail.
If a server running a particular application crashes, then without clustering, the application is unavailable until the crashed server is xed.
HA clustering remedies this situation by detecting hardware/software faults, and immediately restarting the application on another system
without requiring administrative intervention. This process is termed failover.
HA clusters usually use a heartbeat private network connection which is used to monitor the health and status of each node in the cluster.
The most common size for a HA cluster is a two-node cluster.
Figure 38. WDM High Availability Database Clustering
This section provides the steps to congure high-availability (HA) database clustering for Dell Wyse Device Manager (WDM) version 5.0
and above.
Topics:
• Components Required for Database Clustering
• Pre-requisites for Database Clustering
• Conguring the Primary and Secondary VMs
• Creating a Cluster on the Primary Node
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