The Steelhead CX 5055 model appliance and the Steelhead CX 7055 model appliance are tuned for high-performance by combining new levels of bandwidth and TCP session scalability with SSDs. These powerful new appliances efficiently scale to meet the performance, reliability and flexibility requirements of large enterprises, and allow them to more cost-effectively manage large-scale data center-to-data center replication, accelerate applications among many locations and users in an enterprise, and build large private cloud infrastructures. The new models result in an up to 50 percent increase in both wide area network (WAN) capacity and number of connections in a single appliance over the Steelhead 5050 model appliance and the Steelhead 7050 model appliance, respectively.