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Load Balancer Buyer's Guide

The purpose of this article is to help you determine which Barracuda Load Balancer would be best for your organization. When figuring out which Load Balancer would be best, you should ask yourself the following questions.

What types of applications or servers do you want to load balance?
How many real servers are you trying to load balance?
Do you have high bandwidth requirements, similar to streaming media of FTP?

Once you've figured out the answers to those questions, the following chart should be a useful guide to helping you make your decision.

ModelMax Throughput (Mb/sec)Real Server SupportSSL Offloading/ AccelerationLayer 7 Load Balancing
34095035150 TPSx
44095050200 TPSx
640952502,000 TPSx
High Availability is available only with Barracuda Load Balancer 340 and higher.
For most deployments a high availability pair is recommended.
Programming Interface is available in Barracuda Load Balancer 440 and higher.
Hardware SSL Acceleration is available in only the Barracuda Load Balancer 640.
Layer 4 Load Balancing, Direct Server Return, and Intrusion Prevention is available in all models.


Energize Updates- Must be purchased with the device and is required for the first year. This provides for Intrusion Prevention updates, firmware updates, and basic technical support. After the first year, purchasing the Energize Updates is optional. If you choose not to renew then you are likely to see a significant decrease in performance.

Instant Replacement- Optional subscription that extends the hardware warranty on the device. This will also give you enhanced 24x7 support with Barracuda.

Premium Support- Available only on the model 640. This provides for the fastest response time, a dedicated support team that is familiar with your environment, and advanced notification of new repairs and features in upcoming software releases.


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