The primary purpose of configuring VM storage policies in a VMware vSphere environment is to enforce specific storage requirements such as performance, availability, and redundancy. These policies help ensure that virtual machines are placed on datastores that meet the desired service levels and characteristics.

Automated patch management ensures that database instances are kept up-to-date with the latest patches, which is essential for maintaining compliance and security.
Encryption of data at rest and in transit helps protect sensitive database data from unauthorized access and tampering, ensuring compliance with security standards.
Role-based access control (RBAC) restricts database access based on user roles, ensuring that only authorized users have access to sensitive data, which is crucial for compliance and security.

The NSX Edge Cleaner tool is typically run on the Edge cluster node VM(s) to clean up the previous configuration and ensure that the node(s) are properly removed before re-deploying the NSX Edge cluster.
This process helps to reset the environment and remove any leftover configurations that may affect the re- deployment.

When expanding a VMware Cloud Foundation environment with a new workload domain, you have the flexibility to either configure a dedicated NSX Fabric for the new domain or join an existing NSX Fabric from either the management domain or a previously established VI workload domain. This allows for consistent and scalable network virtualization across multiple domains in the environment.

Setting a VLAN ID on a port group on a Virtual Distributed Switch (VDS) allows for network segmentation by tagging traffic with the appropriate VLAN ID. This enables isolation of network traffic between different VLANs, ensuring that communication is restricted to specific segments of the network as required.