Computer hardware; computer software; computer software and hardware for electronic storage of data; computer servers, blade servers, computer network adapters, computer chassis, network extenders, network adapters, and software used in the management and operation thereof, sold as a unit; computer network servers, switches, routers and hubs; computer hardware and software for interconnecting, managing, monitoring, optimizing, securing and operating computer networks, storage systems and telephone systems; computer software for data storage virtualization; telecommunication switches, namely, Ethernet switches, data center switches and unified fabric switches; network access server hardware and operating software; computer software for data analytics; operating system software; computer programs for managing computer systems and computing processes in an information technology environment, and instruction manuals sold as a unit therewith; computer storage devices; computers, computer servers and computer storage apparatus, namely, storage systems for storage and backup of electronic data either locally or via a telecommunications network; instruction manuals sold with the products mentioned above