Unitrends Inc. is a US-based company specializing in backup and business continuity. The company’s portfolio of virtual, physical, and cloud solutions provides adaptive protection and network-based disk-to-disk, vertically integrated backup appliances for data protection and disaster recovery. Unitrends produces a number of physical appliances ranging from small desktop backup appliances to large rack-mounted backup appliances. Unitrends also produces virtual appliances for VMware and Hyper-V marketed as Unitrends Enterprise Backup. The physical appliances typically consist of some level of redundant components; most notably RAID in the form of RAID 1, RAID 6, and RAID 10. These appliances have a “personality” that allows each to perform either on-premises backup, off-premises disaster recovery, or through a technology known as cross-vaulting (a form of replication) an appliance may concurrently perform on-premises backup and off-premises disaster recovery. Unitrends also offers a multi-tenant public cloud based service that the company calls “Unitrends Cloud.” The company states that Unitrends Cloud is based on its previous product offering using its backup appliances to perform off-premises disaster recovery in a single-tenant private cloud deployment methodology. Unitrends uses file- and image-based backup techniques coupled with storage-based and in-flight encryption, compression and data deduplication. The technology supports Bare-Metal restore as well as file-based recovery. Unitrends supports a form of disk staging in what it terms as D2D2x (Disk-to-Disk-to-Any) where “x” can be a disk, a tape, a private single-tenant cloud, or a public multi-tenant cloud. The company attempts to sell its support of storage, operating system, and application heterogeneity and claims that it supports over 100 versions of operating systems and applications. Unitrends states that it uses a web 2.0 user interface that allows it to manage from one to hundreds of its appliances in a single pane of glass. Products are available through a network of dealers and value added resellers.