Need to perform maintenance on your Veeam HA cluster without disrupting backup operations? Learn how to run rescans, perform switchovers between nodes, and safely disassemble the cluster when needed.
Veeam High Availability Cluster provides several maintenance operations that help keep the backup infrastructure available and protected. Once the HA cluster is configured, administrators may need to rescan the cluster, switch roles between the Primary and Secondary Nodes, or disassemble the cluster when it is no longer required.
In the previous parts of this series, we covered how to configure the Veeam High Availability Cluster and how failover works. This final part explains how to perform the main maintenance tasks: rescan the cluster, run a switchover to move the Primary Node role to the Secondary Node, and disassemble the HA cluster safely.
These operations are useful during planned maintenance, troubleshooting, or infrastructure changes. With the correct procedure, you can maintain the Veeam HA cluster without unnecessary service disruption and keep backup services protected.
Rescan
The rescan operation may be required if the Secondary Node has not synchronized with the Primary Node for an extended period. The system performs a rescan operation every 4 hours.
During a rescan, Veeam Backup & Replication pulls Primary Node infrastructure data from the configuration database and synchronizes it with the Secondary Node.
To force synchronisation, right click the Primary Node and select Rescan.
The rescan operation is executed and completed successfully.
Switchover
The switchover operation is used when you need to perform tasks (hardware maintenance for example) that require the shutdown of the Primary Node. During the switchover, the role of the Primary Node is assigned to the Secondary Node. During the switchover procedure, all jobs and services are stopped as well as Instant Recovery sessions.
When maintenance is completed, you can revert to the Primary Node or leave it as Secondary.
To perform a switchover, right click the node you want to switch and select Switchover to another node.
Click Switchover to confirm.
The switchover is being executed. Note the servers that hold the Primary and Secondary roles.
During the procedure, the Veeam Console is restarted. Enter the cluster IP Address and click Connect.
Enter the veeamadmin credentials and click Sign in.
When the switchover operation is completed successfully, the Veeam appliances that are member of the HA cluster have switched their roles.
Disassemble
The disassemble operation is used to dismiss a Veeam High Availability Cluster when it is no longer required or to fix issues with the Secondary Node. When the disassemble task is launched, the Primary Node removes the configuration database from the Secondary Nodes and stops synchronizing.
The secondary node cannot be used as a standalone Backup Server after you disassemble an HA cluster.
To disassemble a Veeam High Availability Cluster, right click the Primary Node and select Disassemble HA cluster.
Click Disassemble to confirm.
The HA cluster disassemble operation is being performed.
When the operation is completed, the Veeam Console is restarted.
The HA cluster is disassembled and the Secondary Node removed.
Several tasks can be performed to maintain a Veeam High Availability Cluster to avoid service disruption and ensure the highest level of protection.
Veeam Backup & Replication is available to download as 30-day trial.
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