The Cisco Media Convergence Server 7845H-3000 (MCS 7845H-3000) is an integral part of a complete, scalable architecture for a new generation of high-quality IP voice solutions that run on Enterprise data networks. The MCS 7845H-3000 delivers the high performance and availability that today's enterprise networks demand and represents a turnkey solution that is easy to deploy and highly cost effective. At only 2U high, the MCS 7845-3000 packs tremendous power in a low-profile chassis that minimizes rack space.This MCS 7845H-3000 comes with four 36GB U320 SCSI hard disks and two 72GB U320 SCSI hard disks.