What is WAN Optimization? | Replify WAN Optimization

By: Replify  09-12-2011
Keywords: construction company, Wan Optimization, wan acceleration

You probably already have some idea what WAN Optimization is, or you wouldn’t be on this site. But if you’ve got as far as this sentence presumably you would like to know more, or to understand how Replify define it.

The terms WAN Optimization, WAN Acceleration and Application Acceleration are effectively synonymous for our purposes here. Let’s talk about the generally accepted definition of WAN Optimization before getting into the Replify perspective.

The networking trends driving this problem are:

2) Cloud computing. Just as the consolidation above was gathering pace, the industry realised that further efficiency and flexibility could be gained by pushing applications and the platforms on which they ran, into shared public data centers where you paid less, and paid only for what you used. This is driving the biggest transformation in delivery of IT that we’ve seen since the mainframe was displaced by mini-computers.

3) More people are spending more time outside the “office”.  Some are home-workers, some travel on business, and some are off-shore workers.

The net result is that more and more people are trying to access corporate applications and data sources across a network that has far less bandwidth and far greater latency than a head-office LAN.  And the applications themselves are often more complex, more collaborative and involve working with larger documents, databases, and rich content such as video. Consider a construction company working with large CAD documents on remote sites. Every design change is a small tweak to a large CAD file, which needs to be shared with others, and preserved as a record on the corporate eDRM system.  Those changes may have to be communicated to and from a muddy field in a remote location served only by narrowband, dial-up, or satellite links.  Or perhaps you’re a retailer with hundreds of small stores, all of which need to send stock-updates and orders each evening.  Fat pipes may be available, but they’re expensive and your margins are slim – you really don’t want to put an expensive high-speed link into every site, just to handle that burst of information once a day.

So this creates a need to make WAN connections behave more like LAN connections in allowing more data, and faster data, across a connection.  Luckily this is indeed possible and the most efficient way we know how to it today is to insert an intelligent proxy at each end of the connection that can intercept and “optimize” the traffic using a variety of complementary techniques. The idea is to use approaches which are transparent to both the user and the server so that nothing else need be changed, no security issues arise, and deployment is quick and easy.

There are three techniques common to nearly all WAN Optimisation and they work together as a “stack” of sorts on each side of the WAN connection.

Some vendors attempt a few other tricks such as monkeying around with the TCP protocol, or establishing multiple parallel connections, and re-ordering the packets which get out of sequence as a result of doing this. In Replify’s view, these techniques add more complexity (and hence cost) than value but others will cite them as their secret sauce so we should acknowledge that point of view.  Some other vendors also bundle Quality of Service (QoS) into their products – while we leave this quite deliberately to those that specialise in it, and our Accelerator product works very well with QoS devices.

So that’s WAN Optimization as a concept – now let’s talk about Replify’s approach to delivering it.

Keywords: construction company, wan acceleration, Wan Optimisation, Wan Optimization,

Other products and services from Replify


Products | Replify WAN Optimization

The impact is more than just user frustration; it’s lost productivity and a breakdown in critical business processes which rely on users exchanging the latest information, working from current versions of documents, meeting records compliance requirements and avoiding creating stale local copies of key documents.


Replify Syncstor | Replify WAN Optimization

After initially selecting content to synchronize, the user can read, edit and create freely, knowing that only a few moments of network connectivity now and then will be sufficient for any changes and additions to be synchronized with the source folders, and to receive the updates and additions of colleagues.


Replify Accelerator | Replify WAN Optimization

Replify Accelerator was the first pure software WAN acceleration product running on commodity computing platforms and today is the only product to match or exceed the performance of specialised hardware devices. Replify Enterprise Manager The Replify Enterprise Manager provides centralized configuration and control of your Replify deployment, with detailed reporting on all of your Clients and Virtual Appliances.


XDR™ | Replify WAN Optimization

The Replify Accelerator Cross-Protocol Data Reduction XDR technology is a bi-directional network caching software module which allows both ends of the WAN to ‘learn’ the data payload as it flows between the client and the accelerated servers.


CLAN: A unique approach to WAN Optimization

We came from a mixture of networking and enterprise applications backgrounds and we understood the working patterns of modern businesses and the need to provide application acceleration for roaming workers. We didn’t see why the problem needed expensive custom hardware devices when virtualization and cost-effective commodity hardware could offer so much more flexibility.