Microsoft ACPI-Compliant Power Meter Device unsigned driver

Windows 2008 R2 cluster validation wizard reports a System Configuration warning about an unsigned driver: Microsoft ACPI-Compliant Power Meter Device. Driver Name: Value Not Found

The problem was missing files acpipmi.ini and acpipmi.pnf from the Windows\inf directory. It seems the files have been deleted after installing EMC PowerPath. So back them up before installing PowerPath or if you have already installed it copy them from another similar Windows 2008 R2 installation.

Configuring a guest Windows 2008 R2 Cluster on virtual machines with virtual shared storage

This is a lab environment I created of a virtual windows cluster with iSCSI virtual shared disk.
The setup consists of 3 Windows 2008 R2 VMs

1. Active Directory and Storage Server: DC 192.168.1.10
2. Cluster First Node: Node1 192.168.1.11
3. Cluster Second Node: Node2 192.168.1.12

Configure a highly available virtual machine on a Hyper-V cluster

To make a virtual machine highly available on a hyper-v cluster:

1. Create the machine on server as you normally do from Hyper-V Role in the Server Manager and store in the Cluster Shared Volume
2. If the machine requires network access, make you sure the virtual network you attach it exists with the same name on all Hyper-V nodes
3. From the Server Manager -> Features -> Failover Cluster Manager expand the cluster then from "Services and applications" click "Configure A Service or Application..." on  the Actions pane and follow the wizard as below