The features of Cisco UCS that are of the most value to me is the ability to build Service Profiles for servers based on your needs. You can add HBAs and NICs to servers as needed, and you can remove them just as easily.
Also, with UCS, updating firmware and drivers has been simplified and can be done throughout the system simply by associating new firmware policies to the hardware. You can also run different versions of firmware as needed to support legacy applications.
Cheap is always expensive. Although this product is quite expensive, you immediately forget its price the moment your company begins to enjoy its effectiveness and capabilities. We use it for our server virtualization services.