To prepare the system for maintenance mode and avoid unnecessary vSAN re-synchronization, follow these steps:
* Log in to vSphere Client:
* Open the vSphere Client.
* Enter the username:[email protected].
* Enter the password:VMw@r3!123.
* ClickLogin.
* Navigate to the Host:
* In the vSphere Client interface, navigate toHosts and Clusters.
* Expand theVxRail-DCand then theVxRail-Cluster.
* Select the Host for Maintenance:
* Select the host you plan to put into maintenance mode
(e.g.,vcluster730-esx01.edu.local,vcluster730-esx02.edu.local, etc.).
* Enter Maintenance Mode:
* Right-click on the selected host and selectEnter Maintenance Mode.
* In theEnter Maintenance Modewindow, you will have several options for vSAN data migration.
To avoid unnecessary re-synchronization, chooseEnsure Accessibility.
* Ensure Accessibility: This option makes sure that the data remains accessible during maintenance but does not immediately trigger full data migration. It is the best choice to avoid unnecessary re-synchronization during a short maintenance window.
* Confirm Maintenance Mode:
* ClickOKto confirm the selection and put the host into maintenance mode.
* Verify the Host Status:
* Monitor the status to ensure the host enters maintenance mode without triggering excessive re-synchronization.
Reference:
VMware vSAN Maintenance Mode Options: vSAN Maintenance Mode
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To summarize, selectingEnsure Accessibilitywhen entering maintenance mode helps to avoid unnecessary vSAN re-synchronization during the maintenance window. This method ensures that data remains accessible and minimizes the impact on the cluster's performance and availability during the maintenance activity.