Unitrends instant recovery is used by Unitrends customers for business continuity in order to maintain service, consistency, and recoverability to their customers, suppliers, regulators, and others with whom they do business. Failover virtualization is the technology by which Unitrends' offers instant recovery.

Failover virtualization for Windows instant recovery allows the Unitrends' physical backup appliance to become a host system for the failed Windows systems to be virtualized. Failover virtualization for Windows instant recovery uses KVM (Kernel-based Virtual Machine) as the virtualization platform. As implemented by Unitrends, KVM is QEMU (sometimes called Quick Emulator) because it runs within the Linux-based RecoveryOS operating system our appliances use in order to optimize performance. Unlike other solutions, Unitrends does not require a "migration" of the backup to a virtual form - thus our ability to quickly recover is much better than most of our competitors. Windows instant recovery is depicted below.