Enable vSAN on the Workload cluster
For documentation of the procedure and considerations in later releases, refer to the VMware docs guides:
Enabling vSANConfigure File Services on the vSAN cluster
For documentation of the procedure and considerations in later releases, refer to the VMware docs guides:
Configuring File Services1. Make sure the vSAN file services is routable from the Workload network and there is no NAT between workload network and vSAN file service IP addresses.

2. Use common DNS server for both vSAN file services and vSphere Cluster.
Activate File Volume Support
You can activate file volume support for Workload Management on the vSAN cluster to deploy ReadWriteMany volumes
1. Navigate to the
Workload Management> Supervisor>Configure>Storage>File Volume
2. Enable "Activate file volume support"
Screenshot for reference: