Loadmaster is very powerful and flexible load balancer. Variety of options allows to create a complex network of rules and routes. During our website rollout Loadmaster allowed us to run multiple generations of the website simultaneously and seamlessly by doing the content switching on the fly. Powerful API allows easy integration into any development lifecycle.
Citrix NetScaler is suited to any environment where hardware load-balancing, application delivery or SSL offloading is a requirement. It's a product that can be used to manipulate traffic flows in a multitude of different ways and its only limit is the protocol, application and imagination of the administrator. It's not a product that includes helpful wizards to guide the admin through each process gracefully. While it is a fairly intuitive product to use, it's not for someone who is not initiated into the ways of networking and network protocols and communication. Nor is this a product that would lend itself solely for the usage of single usage scenarios where small traffic flows would be expected (although if desired the VPX product would probably suffice in that specific scenario depending on the environment)
Complexity. You really need. highly skilled IT team to manage this device. This is not a solution or appliance for SME's - medium or large enterprises only!
Bugs, during 2015-2016 we suffered from a. number of bugs that caused downtime that would not have occurred without the Kemp LM. This is especially annoying given that it was purchased to reduce downtime! During 2017 stability improved.
Costs. This is a high cost solution with high ongoing support fees. Not for those who are very cost conscious
Kemp makes it very easy to setup, configure and manage the LoadMaster without needing a lot of help from their engineers. The interface is very easy to understand and intuitive to use. We like how it is not complicated - I can easily have one of my techs login and they can figure out how to setup/configure virtual services for load balancing without needing a manual or tech support.
I gave the NetScaler a 7 here because the system once configured and deployed is very easy to use. However, if you did not deploy the system and do not have the fundamental background knowledge then you will have trouble using the product in general. Overall it is a great product and service but does typically require professional services to be deployed.
Support has been easy to deal with; I have only need[ed] to contact them a few times during setup. Once its been in place and operational, we have not need[ed] to mess with the system [which] is a huge advantage. I like system[s] that do not break and require constant attention in a production environment.
Overall, our organization's experience with Citrix support is that support can be hit or miss. Oftentimes it takes multiple attempts and much longer than desirable to obtain a viable solution for issues experienced with their products. It would be great to see Citrix invest time, effort, and almighty dollars into improving their support and bug fix process across the board.
The Kemp LoadMaster outshined both of our other evaluated products, mainly in speed of setup, features available, and overall cost of ownership. In the case of the Azure LB it wasn't going to work well for our on Premise servers. The Barracuda was unreliable and difficult to bring online with our needed applications. With the ability to import pre-configured templates into the Kemp load balancer, we were able to have it running within the first day of ownership.
Netscaler has more features than F5 BIG-IP APM product and easier to manage with friendlier user interface for network admins. It was more cost efficient as well and if you have a Citrix XenApp and XenDesktop environment, it is more compatible with those products as well. Our annual maintenance cost is lower as well.
We used Kemp LoadMaster for many projects. For a lot of customers, load balancers were too expensive or too complicated before we introduced Kemp products.
It's not a overly complicated product, so we were able to train many engineers on it and have them get a certification.
