It’s no secret application delivery controller (ADC) services are often perceived as complex to master and administer. Although they may use the latest ADC device, many ADC deployments only use basic layer 4 load balancing. It can be challenging to find an ADC champion who can really take advantage of the most advanced capabilities of an application delivery solution and maximize its business benefits.read more
The devastation wrought by superstorm Sandy is a stark reminder of just how fragile our environment is versus the power of nature. In just a couple of days, a single storm disrupted the lives of so many people and paralyzed a large number of businesses even days after it passed. In the wake of the storm, one of the questions on my mind is, how can we help businesses remain functional after such a massive hit regardless of their size?
Working for an Application Delivery Controller company, I’m no stranger to disaster recovery. Most often, disaster recovery is initiated by large enterprises that invest big money to build entire backup datacenters with the ability to automatically provide all online services in case their main datacenters become unavailable. A reality faced by many businesses in and around New York after the storm.
About a month ago, I wrote a post on cloud load balancing versus application delivery controllers. In that post, I explored the core differences between cloud-managed load balancing and self-managed commercial load balancing, using an application delivery controller virtual appliance running over cloud infrastructure. In part two of this series, I take a closer look at some of the themes laid out in my earlier post with an emphasis on the role application delivery controllers play in addressing the challenges associated with migrating legacy applications to a general purpose cloud infrastructure.read more
Over the past 2 years, Radware has offered virtualized ADC appliances with virtual ADC instances that can be used on hardware appliances or on general-purpose servers. During this time, we’ve noticed two schools of thought emerging on the all-important question of vADC density. The first, argues that vADC density is one of the key criteria to consider when evaluating a virtualized appliance. The second, however, claims that organizations will typically avoid utilizing density higher than 10-16 vADC on a single piece of hardware. In search of greater clarity, we went back after implementing hundreds of ADC consolidation and virtualization projects with thousands of vADCs to check and see if there were any identifiable trends in vADC density deployment.read more
By now, we should all know that a load balancer is an integral part of the new cloud application stack. But while cloud vendors have been charging extra merely for offering more virtual servers, there are several key differences between a shared, cloud load balancer instance – offered by virtually all cloud providers (i.e. Amazon ELB, Rackspace CLB) and a cloud hosted, enterprise-grade application delivery controller (ADC). It’s time to set the record straight.read more