I'm just currently running through the Cisco DCUCI certification process, and are really impressed with concepts and business benefits for the high server farm / data centre operations user. Consolidating down the number of connections per rack, saving power on the switch and SAN elements, allowing full data centres to utilise this extra power and space to add extra compute power without the need to expand the physical building or relocate into another building which can be extremely costly.
Check out the Cisco Nexus platform and their UCS (not unified communications server :-)! ) platform.
