Select an appliance based on capacity

For proper operation, your Citrix SD-WAN WANOP appliance must have adequate resources to support the number of WAN links that you want to accelerate, and to support all of the users of those links. Three capacities are important when selecting a Citrix SD-WAN WANOP appliance: link capacity (bandwidth), user capacity, and disk capacity.

When selecting a Citrix SD-WAN WANOP appliance, the most important factor is that it support your WAN links. If your site has a single WAN link, your appliance should support your link speed. For example, a Citrix SD-WAN WANOP 2000-010 can supports links of up to 10 Mbps, which would be suitable for an 8 Mbps link but not a 12 Mbps link. If your site has multiple links that are to be accelerated by a single appliance, the appliance should support the total speed of all these WAN links added together.

The maximum supported speed is determined by a combination of the appliance hardware and the product license. The licensed bandwidth limit is the maximum link speed that is supported by the license.

Product Licensed WAN BW Range
Current Products  
SD-WAN WANOP 400 2-6 Mbps
SD-WAN WANOP 800 2-10 Mbps
SD-WAN WANOP 2000 , 2000WS 10-50 Mbps
SD-WAN WANOP 3000 5 0-155
SD-WAN WANOP 4000 310-1,000 Mbps
SD-WAN WANOP 5000 1,500-2,000 Mbps

Table 1. Licensed Bandwidth Limits by Product Line

Virtual Apps/Virtual Desktops user capacity

Each appliance is rated for a maximum number ofXenApp or Virtual Desktops users. This value should not be exceeded when your deployment uses Virtual Apps or Virtual Desktops. If you are not using Virtual Apps or Virtual Desktops, consider this number a rough guide to the number of users of other applications.

Product Maximum Users
SD-WAN WANOP Plug-in 1
SD-WAN WANOP 400 10-30
SD-WAN WANOP 800 20-100
SD-WAN WANOP 2000 , 2000WS 100-300
SD-WAN WANOP 3000 300-500
SD-WAN WANOP 4000 750-2,500
SD-WAN WANOP 5000 3,500-5,000

Table 2. Virtual Apps/Virtual Desktops User Capacity

Disk size

Disk space is used mostly for compression history, and more disk space results in greater compression performance.

The SD-WAN WANOP 4000/5000 series offers from1.8 TB to2.4 TB of disk capacity. That compares to 2.1 TB for the SD-WAN WANOP 3000, 470 GB for the SD-WAN WANOP 2000, 80 GB for the SD-WAN WANOP 800, and 40 GB for the SD-WAN WANOP 400. SD-WAN WANOP VPX has a disk capacity of 100-500 GB. Ideally, an appliance should have a disk capacity larger than the cycle time of the link’s data. For example, a link carrying mostly daily update traffic should have 24 hours of disk capacity or more. With a link carrying mostly user sessions, this window can be smaller. (A 1 Mbps link can transfer about 10 GB per day at full speed.)

Table 3. Examples of Data Lifetime for Disk Sizes

Appliance Model Link Speed-1 Mbps Link Speed-10 Mbps Link Speed-100 Mbps Link Speed-1000 Mbps
Data lifetime at 33% link utilization        
SD-WAN WANOP 800 23 days 2.3 days NA NA
SD-WAN WANOP 2000, 2000WS 141 days 14 days NA NA
SD-WAN WANOP 5000 717 days 72 days 7.2 days 17 hours
Data lifetime at 100% link utilization        
SD-WAN WANOP 800 8 days 19 hours NA NA
SD-WAN WANOP 2000, 2000WS 47 days 4.7 days NA NA
SD-WAN WANOP 5000 239 days 24 days 2.4 days 6 hours
Select an appliance based on capacity