VMware: Updating a vSAN Cluster using VUM
I wanted to shed some light on what some may think is a mystery or difficult task. How do I update a vSAN cluster using vSphere Update Manager (VUM)? The quick and simple answer is easily! The great thing about vSAN is that you already know how to upgrade and patch it since it is built into the ESXi hosts and vCenter web client that you already use daily. I will take you through the process of upgrading a host in my home lab. Remember as with any upgrade make sure that your hardware is supported and on the VMware Hardware Compatibility List (HCL) before proceeding with ANY upgrade.
The first step is to make sure you have a baseline attached to your cluster and/or Hosts. You can navigate to the update manager tab in the vCenter Web Client to do this. A baseline is a group that you setup for either patches, or upgrades and then you assign it to physical ESXi hosts or Clusters. You can see here that we have baselines created and VUM tells us that this particular host that we have highlighted is not compliant with this baseline and needs to be patched in order to be in compliance. We will go ahead and create a baseline for this host so you can see that process.
For this example I am going to create a baseline for critical host patches. I will check that box when creating the baseline, in this case since the critical host patches is a predefined baseline I don’t need to go any further to assign to my hosts, another way it can be done is by right clicking a cluster or a host and then choosing to attach a baseline that way as well.
Read the entire article here, Updating a vSAN Cluster using VUM
Via the fine folks at VMware!