About minimal downtime upgrade
Use a minimal downtime upgrade to upgrade VCS. This procedure minimizes downtime for the cluster that you want to upgrade. Depending on the situation, you can calculate the approximate downtime as follows:
You can fail over all your service groups to the nodes that are up.
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Downtime equals the time that is taken to offline and online the service groups. |
You have a service group that you cannot fail over to a node that runs during upgrade.
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Downtime for that service group equals the time that is taken to perform an upgrade and reboot the node. |