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Posts Tagged ‘Layer 4-7’

Without sounding sarcastic, the primary benefit of a virtual application delivery controller (ADC) is that, well, it’s virtual. It requires no hardware to deploy making it low cost. It’s mobile so the ADC can be moved from one location to another in real time and it can be self provisioned by anyone, including an application developer. But virtual ADCs have their drawbacks, too.

Historically, ADCs have been physical appliances located between the network and application tiers in a data center or deployed at the edge of a network to help optimize service delivery. The primary role of ADCs has been for load balancing purposes but a number of advanced features such as encryption, security, video optimization and some application specific features have been added over the past half decade. This shift in functionality has added to the need for ADCs across different verticals and company sizes.

This increased demand is why there have been so many more versions of the ADC launched recently, including virtual editions. This begs the question, though, can virtual ADCs replace physical ones in production environments? There’s no doubt that virtual ADCs can be used as a developer tool but the big question is around production environments which leads us to the question of “to virtualize or not to virtualize?”

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