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Updating vSAN Clusters from Version 8 to Version 8 Update 2

As part of the VMware vSAN study guide series, this post will cover the process of updating an existing vSAN cluster from version 8 to version 8 Update 2. Updating vSAN is a multistage process that requires careful planning and execution to avoid any disruptions or data loss.

Before we begin, it’s essential to understand the prerequisites for updating vSAN. Ensure that you have a valid license key for vSAN 8 Update 2 and that all the nodes in your cluster are running the same version of vSAN. Additionally, make sure that you have a backup of your data before proceeding with the update.

Stage 1: Planning the Update

The first stage involves planning the update process. This includes identifying the nodes that will be updated first, creating a backup of the data, and ensuring that all the nodes in the cluster are properly configured for the update.

To begin the update process, log in to each node in your vSAN cluster using vSphere Client or the vSAN CLI. Once logged in, run the following command to check the current version of vSAN:

`esx-cli vsan version`

This will display the current version of vSAN installed on the node. If you are running version 8, you can proceed with the update by using the following command:

`esx-cli vsan upgrade`

This command will initiate the update process and download the necessary files for the update. Once the update is complete, the node will automatically reboot and begin the installation process.

Stage 2: Updating the Nodes

The second stage involves updating each node in the cluster. This can be done in any order, but it’s recommended to start with the management node first. Once updated, each node will automatically reboot and begin the installation process.

After all the nodes are updated, you can verify the new version of vSAN by running the following command:

`esx-cli vsan version`

This should display the version 8 Update 2 of vSAN.

Stage 3: Verifying the Update

The final stage involves verifying that the update was successful and that all the nodes in the cluster are properly configured. This can be done by checking the logs for any errors or warnings, ensuring that all the services are running correctly, and verifying that the vSAN configuration is proper.

It’s also essential to test the performance of your vSAN cluster after the update to ensure that there are no issues with I/O or storage. You can use tools like vSphere Performance Monitor or third-party benchmarking tools to test the performance.

Conclusion

Updating an existing vSAN cluster from version 8 to version 8 Update 2 is a multistage process that requires careful planning and execution. By following the steps outlined in this post, you can ensure a successful update with minimal disruption to your data. Remember to verify the new version of vSAN and test the performance of your cluster after the update to ensure proper configuration and optimal performance.