You can activate vSAN when you create a cluster or enable vSAN on your existing clusters. Characteristics of a vSAN ClusterBefore working on a vSAN environment, be aware of the characteristics of a vSAN cluster. Before Creating a vSAN ClusterThis topic provides a checklist of software and hardware requirements for creating a vSAN cluster. You can also use the checklist to verify that the cluster meets the guidelines and basic requirements. Enabling vSANTo use vSAN, you must create a host cluster and enable vSAN on the cluster. Using vSAN Configuration Assist and UpdatesYou can use Configuration Assist to check the configuration of your vSAN cluster, and resolve any issues.