By Tim Naramore
Chief Technology Officer
The combination of higher IT costs, globalization and shrinking budgets have many companies and institutions considering virtual desktop infrastructure, or VDI, to simplify IT management, easily scale operations, reduce costs and improve application delivery to users across all devices.
How those companies prioritize VDI on their corporate wide area network (WAN), though, will play a significant role in the quality – and ultimate success – of their implementations.
Low tolerance for latency and jitter VDI is both demanding on a network and intolerant of poor performance. Since users are likely communicating with an off-premise datacenter, VDI – similar to voice and video over IP – must transfer packets across the network in real-time, or close to it. If that doesn’t happen, then latency can negatively affect application performance, and the end-user experience – and productivity – can suffer. Jitter or the variation in packet delay is also a key factor affecting performance, and consistency of latency is as important when transporting a user’s desktop across the WAN.
Lack of optimization – WAN optimization works well for images and multimedia streams via caching and compression, but interactive traffic like common mouse and keyboard inputs cannot be compressed well because they are transported through inherently small packet streams. Likewise, these inputs cannot be cached, leaving them open to potential latency and giving users the perception of a slow system.
A Bold Solution
For most, a user’s computer desktop is just as important – if not more – than their voice and video capabilities. Typical users have more daily interactions with their computer systems than they do with phone and video systems.
So any VDI experience should have a high priority placed in your network hierarchy to keep worker productivity and satisfaction at a maximum. By dedicating bandwidth to VDI and classifying that service over other competing traffic, latency and jitter issues can be minimized and quality of service can be guaranteed.
Masergy offers this VDI prioritization through a QoS-enabled network that is comprised of six classes of service inherently available to all customers with 100 percent in-sequence packet delivery and minimal latency variation. Masergy also gives companies the flexibility, analysis and control needed to achieve optimal performance for applications such as VDI. Masergy has numerous customers who have successfully deployed – and continue to successfully enable – VDI systems across the Masergy Global Infrastructure.