Product Documentation

NetScaler SD-WAN 4000 and 5000 WANOP Appliances

Aug 09, 2017

Citrix NetScaler SD-WAN 4000/5000 WANOP appliances are high-performance WAN accelerators for busy datacenters. These appliances combines multiple virtual accelerator instances with a single virtual instance of the NetScaler load-balancer, providing the performance of multiple SD-WAN WANOP appliances in a single package.

SD-WAN 4000/5000 WANOP WAN accelerators are the high end of the Citrix NetScaler SD-WAN product line. They are designed to accelerate sites with WAN links with speeds in excess of 155 Mbps, especially busy datacenters that communicate with a large number of branch and regional sites.

Figure 1. Typical Use Case


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A single SD-WAN WANOP 4000/5000 appliance can support WAN speeds of up to 2 Gbps and up to 5000 XenApp/XenDesktop users.

For datacenters needing even more performance, multiple SD-WAN WANOP 4000/5000 appliances can be deployed as a load-balanced array using the WCCP clustering feature.

Figure 2. Load balancing multiple SD-WAN WANOP 4000/5000 appliances

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SD-WAN WANOP 4000/5000 is recommended at the hub of a hub-and-spoke deployment, where smaller appliances are used at the spokes, whenever the link speed or the number of XenApp/XenDesktop users is higher than can be supported by a smaller appliance.

DC to DC Replication

If you require a secondary data center, SD-WAN WANOP 4000/5000 appliances can provide optimization for Data-Center to Data-Center replication. This optimization improves replication time and reduces bandwidth consumption.

For details on how to configure a SD-WAN WANOP appliance for DC-to-DC replication with NetApp SnapMirror, see