WAN
Optimization Controllers are appliances that optimize data-transfer
efficiencies across a wide area network (WAN). It is a collection of
techniques that optimize bandwidth to improve the end user's
experience. WAN
optimization controllers use
a combination of techniques such as compression, latency
optimization, forward error correction, caching / proxy,
deduplication, traffic shaping, application
acceleration,
network acceleration equalizing, protocol spoofing, connection
limits, simple rate limits to accelerate applications and reduce the
cost of delivering applications over wide area networks.
Normally
enterprise users experience great performance when using applications
and services over a LAN. However, they face problems when accessing
remotely the same applications and services over the WAN. Accessing
applications across a WAN introduces network congestion, latency, and
packet loss that can dramatically slow remote end user response time.
Many IT organizations increase their spending by adding more network
bandwidth to address these issues, only to find that poor application
response time over the WAN has not changed. Moreover, with the
addition of Virtualization, many enterprises are consolidating
servers into corporate data centers. However, the consolidation of
applications out of the branches and into the data center puts even
more strain on the corporate WAN. In some cases, this degrades end
user response time even further. That is where WAN or network
optimization appliances come useful. The following are some of the
benefits of using the best of breed WAN optimization controllers.
*
Reduces remote application response times by up to 95%
*
Reduces network bandwidth utilization by up to 95%
*
Purpose-built to reduce the impact of network congestion, latency and
packet loss which combine to dramatically slow end-user response
times
* Application-specific WAN
optimization blueprints
and specific protocol optimization eliminates redundant, chatty
protocol traffic
* Stream-based
differencing avoids transmission of content already in the local data
store, while compression techniques reduce the amount of data on the
wire
*
Window resizing, persistent connections and small packet aggregation
dramatically improve overall TCP performance
*
Supports 50% more accelerated connections as compared to alternative
appliances
*
Virtual appliances use minimal system resources, can reside with
other applications and scale linearly with the addition of CPU cores,
memory and disks
*
Enables easier management of virtual and physical deployment,
transparent addressing, statistical performance dashboard and auto
discovery
*
Provides centralized provisioning and management through integration
with Virtualization management systems
Thus
by deploying WAN optimization controllers, enterprises can ensure a
premium application experience for all users and achieve rapid ROI by
lowering overall bandwidth costs.
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