The SAS Connectivity Card (CFFv) for IBM BladeCenter is compatible with the HS21 XM and HS12 blades. Unlike the SAS Expansion Card, the SAS Connectivity Card does not contain a SAS controller, but utilizes the unused SAS controller ports from the blade for enabling a SAS connection from the blade server to the SAS Connectivity Module and the external SAS storage fabric.BladeCenter leads the industry in delivering integrated storage solutions to the blade server environment. Integrated storage solutions ease deployment, simplify the datacenter, reduce cabling, and lower cost.Each BladeCenter server provides redundant connections to the storage system. Users can configure their blade servers with dual-port host bus adapters and be assured that they will always have a connection to their storage devices via the high-availability midplane.Through integration, BladeCenter eliminates the cables from the server to the I/O module. This not only reduces the opportunity for misconfiguration, but also helps to lower the expense for cables and reduce potential points of failure, while helping increase storage availability.