IT managers and executives face explosive data growth, driving up costs for primary storage as well as storage for backup and disaster recovery (DR). Nevertheless, IT organizations continue to seek solutions to reduce storage costs and footprint while maximizing return on investment (ROI) on their IT infrastructures. To meet these demands for improved efficiency, FalconStor Software offers Single Instance Repository (SIR) de-duplication technology, which integrates tightly with the industry-leading FalconStor® Virtual Tape Library (VTL). This white paper explains how VTL with SIR reduces storage and replication bandwidth requirements with unique features such as clustered architecture and linear performance aggregation.