You can create an MSCS cluster in which each physical machine has a corresponding virtual machine. This type of configuration is known as a standby host cluster.

A standby host cluster has specific hardware and software requirements.

  • Use ESXi hosts that have the following:

    • Two physical network adapters dedicated to the MSCS cluster and to the public and private networks.

    • One physical network adapter dedicated to the VMkernel.

  • Use RDMs in physical compatibility mode (pass-through RDM). You cannot use virtual disks or RDMs in virtual compatibility mode (non-pass-through RDM) for shared storage.

  • Use the STORport Miniport driver for the Fibre Channel (FC) HBA (QLogic or Emulex) in the physical Windows machine.

  • Do not run multipathing software in the physical or virtual machines.

  • Use only a single physical path from the host to the storage arrays in standby host configurations.