Silver Peak Systems offers both physical and virtual appliances for WAN optimization. The NX series of physical appliances (the NX-1000 is pictured) scale from Mbps to Gbps of WAN capacity, depending on the size of the enterprise and number of applications to be supported. They are designed to optimize all IP traffic regardless of transport protocol and application software version, and to support real-time applications like VoIP, video and desktop virtualization, in addition to traditional file, email and web traffic. The data center-specific versions of the NX line scale from 50Mbps to 2.5Gbps, and from 64,000 certified connections to 256,000. The company recently unveiled pay-as-you-go WAN optimization and then a free version of its WAN optimization software for virtual environments.
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