Extended Fabrics delivers all of the scalability, reliability and performance benefits of Fibre Channel SANs beyond the native 10 km distance specified by the Fibre Channel standard. With Extended Fabrics, SAN fabric coverage can be increased to 100 kilometers at full bandwidth to campuses, Metropolitan Area Networks, and backup sites. It also increases high availability by providing long-distance backup support to ensure business continuance and disaster recovery. This component is required with the use of Very Long Distance SFPs and/or wavelength division multiplexing (WDM or DWDM).