What are the advantages of the XLi over the 800 and 900 series?
This is a completely new and modern design with new components that will last into the next decade. Modularity makes it easy to configure and design into your existing setup. It is very easy to communicate with and control, and with the standard network port, it is very convenient to have and control and monitoring becomes much easier and convenient; finally, XLi supports redundancy in power supply for higher uptime assurance.