The Cisco Media Convergence Server (MCS) 7800 series offers a high-availability server platform for Cisco AVVID (Architecture for Voice, Video and Integrated Data). The Cisco MCS 7800 series server family is an integral part of a complete, scalable architecture for a new generation of high-quality IP voice solutions that run on the enterprise network. The MCS-7820, MCS-7830 and MCS-7835 deliver the high performance and availability demanded by today's enterprise networks and represent turnkey solutions that are easy to deploy and highly cost effective.The MCS-7835 is engineered to run a variety of Cisco AVVID applications, such as Cisco 100-user uOne voice messaging. This product does not contain tape drive.