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DUCUG 2012-1

Today our first Dutch Citrix User Group event took place. After a short introduction by Edwin Houben ( our leader of the pact ) Andres van Wingerden of Citrix started the first presentation.

The session was about the future of Citrix and Andres kindly asked not to communicate the content of the session.  It's really cool that Citrix shares such information on our first event, but logically I can not blog about this session.

The second session was a customer case of the city hall of Amsterdam. He started with an introduction of the current situation with many IT organizations and logically lot's of challenges to move that to one organization. Interesting story building a new infrastructure on the newest (beta) techniques and to change the infrastructure including BYOD. The are focusing on interfaces (services) instead of devices. The several departments can choose which services they would like to adopt. A good concept, by letting the customer to choose what they would like to use. Also pretty special is the fact that they are not introducing new thin clients anymore. Really like the arguments they are using for that decision. Also good decision point used for choosing for XenApp instead of XenDesktop.

After lunch we continued with our Bring Your Own Session starting with Niek Boevink about the TP of the Citrix Universal Printer. He started describing with the current situation and that printing is still a challenge. Niek also mentions some handy tools, continuing with the Citrix Universal Printer Driver. He described the technique behind and how it actually works. A good overview what the products offers and what the future probably will bring into the product.

The second BYOS was by Stefan Willems with the presentation  a day of a real cloud consumer. A complete other view of the cloud consumeration. Stefan did bring it on real cool way. Although it was full of humor, it really represents how current companies still works. You should definitely go to Stefan his session if he presents this at another event.

The last and third BYOS was Citrix PVS versus  MCS by Danny van Dam. He started with the current situation and mentioning the decision tree created by Daniel Feller. A quick good overview when you should use PVS or MCS. After the decision tree new products were released Provisioning Server 6 and XenServer 5.6 SP2 (Intellicache) and how this effects the decision (Intellicache helps MCS, PVS is mor proven, PVS is more complex, use a PoC to test most methods).

Next was our surprise Jim Moyle presenting Windows IOPS deep dive. According Jim is actually about user experience and IOPS is one of the main causes a less user experience. Do the right sizing of the storage is really important. Jim also mentioned the differences between Stateless and Persistent VDI implementations and the effect on IOPS. The next topic was how Windows works and what happens when Windows is virtualized, followed by showing the test results of Jim and how to analyze the data. It's all about the boot storm, agent starting and application startup. Do not size on the ready state. Also take a look at your anti virus product,  because this can also cause a lots of IOPS. Scaling an average will screw user experience at some time, when we are above average (actually logically).

After a short break Ingmar Verheij started with his performance Perceived Performance. He started with explaining what Perceived Performance is and how you can quantify that with which factors. Interesting topic how people notice performance and how people think performance is acceptable for different actions. Next topic how you can get the data: automated test via loadtest.

Barry Schiffer continued with a session about Citrix HDX. He started where HDX is all about (bandwidth is precious, utilize client capabilities, deliver native experience). He also showed the results of the tests of Shawn Bass and Benny Tritsch and some other tests comparing the several protocols. Barry continued with the enhancements made in HDX 5.5 (adaptive display, flash redirection v2, hdx realtime, hdx richgraphics, mulitstream Ica, aero redirection). Barry mentions that almost every HDX feature is also available in XenApp, so this is still a good option in comparison with VDI. VDI should be used for other use case scenarios, HDX is not an important factor in this. Next topic was HDX 3D, summarized test it thoroughly and the differences between this component on XenDesktop versus XenApp.

After Barry's session I was on stage with my presentation about best practices for migrating to the latest version to Citrix XenApp.  Hopefully the attendees enjoyed the session. After my session we had some good discussions about the DUCUG followed by some refreshments. I really enjoyed this day and loved the good atmosphere in the audience. Already looking forward to the next event.