The MCS-7845I-2.4-ECS2 is a MCS 7845I-2400 specifically targeted at unified messaging deployments, with less required disk drive capacity because messages are stored on a separate server. The MCS-7845I-2.4-ECS2 is equipped with dual Prestonia Xeon 2.4GHz processors, 1 GB SDRAM, four 36 GB SCSI hard disk drives (2 X RAID 1 configured) and redundant power supplies. A single MCS-7845I-2.4-ECS2 can support up to 2500 unified messaging subscribers or voice messaging subscriber if the messages are stored on a separate server.