As a host-based volume manager, Storage Foundation (SFW) provides the ability to mirror volumes across arrays. Clusters which rely on shared storage can be stretched beyond the confines of a single data center to a data center located at a DR site, as long as the distance between the two data centers doesn't exceed fiber channel latency limitations. These stretched clusters, also known as campus clusters, provide a level of high availability that can withstand a complete site failure.

SFW running in the parent partition can facilitate stretching of the failover cluster to another site by providing support for dynamic disks through its Volume Manager Disk Group cluster resource. With dynamic disks now available in the cluster, volumes can be mirrored across the arrays which are located in different data centers and are seen and shared by cluster nodes that are located in those respective data centers. If the active site should experience a failure, virtual machines that were running at that site can be failed over to the cluster node at the other data center, and applications running on them can be brought back online.