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Since the nodes of a cluster must have the same hardware and software configuration, the updates will need to be installed through the "Cluster-Aware Updating (CAU)" console.

Since Windows Server 2012 R2, there is a new feature called "Dynamic witness" that allows to dynamically manage the voting right of the witness disk or share.

Configuring your cluster quorum is important for your cluster to function properly and for as long as possible.

Managing quorum and witness disk or share is very important when creating the cluster, because your cluster depends on it.

With failover clusters, you can offer many highly available services, such as file servers, iSCSI servers, DHCP servers, ...

With MPIO, you can use multiple paths to access resources of your iSCSI server and distribute the network load across multiple links.

Have a DR (Disaster Recovery) environment for your virtual machines is essential and requires a cluster of Hyper-V Replication Broker

Failover clusters provide high availability for some Windows Server roles, but also for virtual machines of your Hyper-V servers.

In business, it's important to have some flexibility. With live migration, you can easily migrate computers from one Hyper-V server to another without stopping them first.

When using multiple Hyper-V servers in your enterprise, it may be worthwhile to automatically replicate virtual machines from one server to another securely (via HTTPS / SSL).

When using multiple Hyper-V servers, it may be interesting to be able to automatically replicate some virtual machines from one server to another.

As on any virtualization server (hypervisor), you can export and import virtual machines, as well as their snapshots (checkpoints), virtual hard disks, ...