The document describes the DXi4700 Deduplication Appliance from Quantum, which can dramatically reduce redundant backup data and associated costs. It achieves high deduplication rates of up to 90% to make disk backup more cost-effective than tape. The appliance offers scalability from 5TB to 135TB usable capacity and a pay-as-you-grow model through license-based capacity upgrades. It provides an efficient deduplication solution for entry to mid-sized organizations to reduce backup times and storage costs.