Question 44 - D-VXR-OE-23 discussion

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.

Click Login.

Navigate to the Host:

In the vSphere Client interface, navigate to Hosts and Clusters.

Expand the VxRail-DC and then the VxRail-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 select Enter Maintenance Mode.

In the Enter Maintenance Mode window, you will have several options for vSAN data migration. To avoid unnecessary re-synchronization, choose Ensure 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:

Click OK to 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.

VMware vSAN Maintenance Mode Options: vSAN Maintenance Mode

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To summarize, selecting Ensure Accessibility when 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.