- ICA protocol performance on a slow network
- Adaptive user constraint in a different user environment
- Load balancing and HA
Citrix needs to ameliorate their administrative panel and provide a tool to
add more control in the user Citrix environment. An example is Norskale,
recently acquired by Citrix. Actually the user profile can only be modified
by third part tools or by a system tool (like : regedit, script and other).
In addition the AppCenter (XenApp 6.5 version) is not a simple tool and
need to be optimized (too long to load, too many options in different
submenus) and debugged (some columns added in user view corrupt the access
to the AppCenter).
We have used this solution for four years. We used Citrix XenApp when the product was called Presentation Server.
There were some stability issues, primarily with printers and some device drivers. It's important for an administrator to configure policies correctly to prohibit some devices from connecting.
We did not encounter any scalability issues. However, scalability is the key to user performance. The administrator needs to check performance counters to ensure the best user experience.
The technical support is adequate.
We used Microsoft RDS, but it did not have the same performance as the ICA protocol. It lacked the load balancing and high availability functionalities.
The initial setup is pretty simple, but you need to follow the manual as with any software installation.
Beware! It is expensive. You need to include all variables when you are going to migrate your users or applications to a Citrix environment. Remember to establish a global strategy.
We did not evaluate any alternatives. Other products on the market lack the same functionalities.