Independent of where the system is physically located (i.e., in lower Manhattan or in Brooklyn), both streams of data are simultaneously distributed out of both sites using an SIAC-developed Multicast Packet Replicator (MPR) thus providing "live" redundant streams to data recipients. The use of IP Multicast, introduced to the market data industry in 1997, was the first widespread implementation of such technology. SIAC's design and implementation of this technology has been recognized and accepted into the permanent archives of the Smithsonian Institution. This technology allows trade and quote data to be distributed in a broadcast mode over a network and eliminates any dependency where one data recipient having a problem might impact another data recipient.