Utilizing dual Intel Prestonia Xeon 3.06GHz processors, the Cisco MCS 7845I-3000 is a robust highly available server platform designed to support today's IP Communications applications. The MCS 7845I-3000 includes such innovations as variable speed fan support, NetBAY cabling support, Light Path Diagnostics and Chipkill memory support. The Cisco MCS 7845I-3000 occupies only 2U rack space while providing the features most requested in a high availability server platform.The MCS-7845I-3.0-ECS2 is specifically targeted at unified messaging deployments, with less required disk drive capacity because messages are stored on a separate server.The MCS-7845I-3.0-ECS2 is a MCS 7845I-3000 targeted at Unity deployments supporting unified messaging. A single MCS-7845I-3.0-ECS2 can support up to 2500 unified messaging subscribers or voice messaging subscriber if the messages are stored on a separate server.