NetScaler ADC is an application delivery controller.
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VMware SRM
Score 9.0 out of 10
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VMware's Site Recovery Manager (VMware SRM) is a disaster recovery option, used to automate orchestration of failover and failback to minimize downtime and improve availability with VMware Site Recovery Manager.
Citrix Netscaler can be a powerful network appliance for environments that are fully committed and open to utilizing a network appliance that isn't made by a traditional network vendor. Administrator user experience has improved over the years and will continue to improve with the flexibility of virtual and physical appliances available for medium and large enterprises.
It's quite well suited for a medium to large size VMWare virtualization infrastructure where your production infrastructure can be failed over to a disaster recovery site. There are other cheaper options for a smaller budget business. Also, for a non mission critical virtual infrastructure, you can simply use VM backups such as Veeam backups for restoring failed VMs
Flexibility. NetScaler assumes its admins know a bit about networking and in-depth details surrounding the applications they are configuring access for/to. This being so, the range of configuration options is very broad allowing various versions' combinations of protocol patterns, expressions, rules etc., all to the benefit of the admin.
Granularity. Having such a broad range of configuration options available, while still allowing simple options to be configured simply. The GUI is well-stylized and navigation has a good flow.
Ease of control. For load-balancing of simple services right out of the box, NetScaler makes it pretty easy, compared to the range of options available in the surrounding GUI and under the hood.
The documentation could use an overhaul with specific examples related to the command line as well as GUI. Explanations in the documentation would also be helpful.
Being able to have more than just one routing table would allow the ability to leverage security.
It’s unfortunate, but more and more, the quality of VMware’s products and the technical support teams behind them has degraded significantly. We have opened several support requests within the last few months and ended up resolving a large majority ourselves due to the poor performance of their remote teams.
VMware is suffering from the same illness that’s affecting multiple U.S. technology firms, in that their focus has shifted completely away from their customers and moved to pleasing investors. In doing so, clients suffer because they do not get properly tested products and the support teams behind them are very weak and overwhelmed.
We worked close to a month trying to get SRM V6.5 to work. We have worked with many previous versions of SRM in the past while using HP EVAs, NetApps and Hitachi arrays, and we can honestly say that we are greatly disappointed with this release and the company.
We escalated right up to engineering, but their response times were brutally slow; the technicians were juniors at best.
As a technology leader, the last thing you want during a DR is to be dealing with a company that just can't deliver. SRM is not cheap, and you would expect much better products and support from VMware.
If you are comparing products, try other companies like Veeam... We ended up using them instead, the setup and execution was easy and seamless, and they answered all our questions quickly and efficiently. They actually do care about their clients.
Improve on the specifics I mentioned previously and could be a 10/10 product. It is also a confusingly branded product that I have supported in two large enterprises where IT departments are unsure if the product belongs to the Citrix remote access support team or the Network infrastructure support team (it should be the later) and typically under utilized.
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.
Sometimes we have to struggle explaining the problem and getting it resolved on priority. The overall quality of support team is not as good as it used to be in past.
We chose Citrix ADC over Kemp and F5 due to additional integrations with various products such as Citrix/Horizon/Monitoring tools. We additionally chose ADC due to better ease of use and ability to have the appliances be virtual or physical, with the configuration being a simple migration of code which provided flexibility to be able to do a hybrid environment with ease.
Entertained Veeam, however with SRM's tight integration and "brand" it was an easy decision. The cost for a 25 server license also weighed in the decision for using a VMware product. Plus I am a VMware fan and feel this option to go with SRM will transcend jobs.
The biggest positive is that we have a data recovery solution that we can test and verify in a live condition. Prior to this we were only hoping we could recover from a disaster.
We've been only running for 4 months and haven't had to use SRM.
