The HP 6Gb SAS BL Switch for HP BladeSystem c-Class enclosures is an integral part of HP direct connect SAS storage, enabling a shared SAS storage solution. The SAS architecture combines a P711m, P712m (with cache module), P721m or P731m HP Smart Array Controller in each server and the 6Gb SAS BL switches connected to supported HP storage enclosures for SAS storage. The 6Gb SAS BL Switch contains an embedded Virtual SAS Manager (VSM) GUI & CLI interface used to zone, monitor, and update SAS fabric devices