Failover clustering is one of the most utilized features on Windows servers, and is used to provide high availability and fault tolerance to certain Windows-based roles and third-party applications. There's not much that is new about this Windows feature other than what it has already brought onto the table. It has proven to be path breaking, yet consistent. Windows failover clustering has been employed on physical servers and guest machines alike, using the same shared storage principle. Physical servers have always used the iSCSI, FC, and FCOE LUNs for this requirement, whereas Windows guest machines have relied by far the most on iSCSI. With the advent of the virtual fibre channel from Windows Server 2012, they have been delivering the same result.

Shared VHDX unfolds a new chapter. However, there are likely to be some gotchas before you set this on a roll. There are two supported configurations for this setup: