Resource Pools allow administrators to group virtual machines and apply specific CPU and memory resource constraints, helping ensure certain performance levels or service quality for different workloads.

A Virtual Distributed Switch (VDS) in a vSphere environment enables centralized management of network configurations across multiple ESXi hosts. It simplifies network administration by allowing the administrator to configure network settings, such as VLANs, port groups, and policies, for multiple hosts at once, ensuring consistency and scalability.

Comprehensive and Detailed Explanation From Exact Extract:
According to the VMware vSphere with Tanzu Documentation and VMware Cloud Foundation 5.2 Administration Guide, the supported method to access Supervisor Control Plane VMs for troubleshooting involves the following actions:
Option B: Log into the Supervisor Control Plane VM using the admin user and <password>.
Exact Extract from official documentation:
"To troubleshoot Supervisor Control Plane VMs, log in via SSH using the 'admin' user and the password specific to the Supervisor Control Plane VM." (VMware vSphere with Tanzu Documentation - Supervisor Control Plane VM Access) Option E: Update the <password> by running /usr/lib/vmware/auth/bin/chpw admin.
Exact Extract from official documentation:
"If you need to update the 'admin' password for Supervisor Control Plane VMs, use the command
'/usr/lib/vmware/auth/bin/chpw admin' on the VM."
(VMware vSphere with Tanzu Documentation - Changing Admin Passwords)
Option F: Obtain the <password> by running /usr/lib/vmware-wcp/decryptK8Pwd.py.
Exact Extract from official documentation:
"You can retrieve the 'admin' password for the Supervisor Control Plane VM by running the Python script
'/usr/lib/vmware-wcp/decryptK8Pwd.py' on the vCenter Server Appliance." (VMware vSphere with Tanzu Documentation - Retrieving Admin Credentials) Why Not the Other Options?
Option A: Logging into the vCenter Server Appliance is not necessary for direct access to the Supervisor Control Plane VMs.
Option C: SDDC Manager appliance access is unrelated to Supervisor VM troubleshooting.
Option D: Root login to Supervisor Control Plane VMs is not supported or documented for troubleshooting.
Summary:
To access the Supervisor Control Plane VMs for troubleshooting, the administrator must use the admin user and password (B), can update the password using the chpw command (E), and retrieve the current password using the decryptK8Pwd.py script (F), following the exact steps documented in the VMware official guides.

Fault Tolerance keeps a synchronous secondary VM on another host. HA restarts VMs after a failure, Replication copies data but doesn't provide zero downtime, and Storage DRS manages datastore load.

Checking the vSAN Health Service in the vSphere Client is the first step in diagnosing the issue and verifying the status of the vSAN components after the disk failure.
Rebuilding the affected disk group is necessary to ensure that data is re-optimized and replicated in accordance with the vSAN policy.
Replacing the failed disk with a new one ensures that the storage capacity is restored.
Ensuring that the new disk is claimed by the vSAN cluster is important to ensure that it is recognized and integrated into the vSAN disk group.