Instruction/ maintenance manual of the product 4.1 Citrix Systems
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Worldwide Consulting Solu tions XenServer for XenApp - Better Together Overview For the la st few years, IT professionals h ave questioned whether it m akes sense to virtualize XenA pp environm ents. The answer has alwa ys been “ it depends. ” In short, that answer has not chan ged.
2 Greater Av ailability Organizations are look ing for ways to provide great er availabil ity and responsivenes s to applications. This m eans being able to overcom e faults, failures an d surges in a.
3 Figure 1: Ph ysical XenApp Architecture Improving availab ility and flexibilit y often results in low er utilization rates because m ore physical servers are r equired.
4 W hen creating a load managed group, each group m ust provide enough redundan cy to be capable of supporti ng all users in the event of a server failure. T his results in an N+1 scenario where the re is at least one additional XenApp server per load managed gro up.
5 In addition, org anizations are also interes ted in becom ing more flexible by m oving with changing custom er needs. To achieve this, the IT organization m ust also be able to c hange or expand th e infrastructur e easily. In a trul y physical environment, this is dif ficult as servers require installation and configurat ion.
6 Figure 2: Xen Server Enterprise Architecture All components, excep t the Line - of -Busines s load managed grou p, will be virtuali zed inside of a XenSer ver Resource Po ol. This arc hitecture help s us to improve upon the 1:1 s erver to role ratio in the ph ysical world, deliver ing a 1:Man y ratio in the virtual wor ld.
7 Dev/Test: Utilizing X enServer Enterprise in the Dev/T est environm ent allows for e asier synchronizati on with production at a great cost savings.
8 image per serv er role. The architectur al advantages in troduced by leveraging the Provisioning Server c omponent of XenServer Platinum can be seen in Figure 3. Figure 3: Xen Server Platinum Architecture W ith the defined XenApp architecture, ther e are f ive distinct roles: 1.
9 modified. T hese modifications allow the ser ver to becom e part of the XenApp farm during server deliver y, as explained in the Xen App Integration step. Startup Phase: T he server is no longer using its localized op erating s y stem present on its local storage.
10 Results Based on the three arc hitectures identif ied within this docum ent, it should be c lear that a “ one si ze fits all solution ” is not the best approach. T he best appro ach should be able to integrat e the best utili zation, availability and flexibilit y for physical servers as well as virtual servers .
11 Conclusion Although ser ver virtualization is in high dem and, it should be used t o address busi ness requirem ents . Som e IT organizations are c onsidering implem enting a server vir tualization solution for m any aspects of their inf rastructure believing it wil l solve all of their e nvironmental challenges.
12 Notice The information in this publication is subject to change w ithout notice. THIS PUBLICATION IS PROVIDED “AS IS” WITHOUT W ARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING ANY W ARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.
An important point after buying a device Citrix Systems 4.1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Citrix Systems 4.1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Citrix Systems 4.1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Citrix Systems 4.1 you will learn all the available features of the product, as well as information on its operation. The information that you get Citrix Systems 4.1 will certainly help you make a decision on the purchase.
If you already are a holder of Citrix Systems 4.1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Citrix Systems 4.1.
However, one of the most important roles played by the user manual is to help in solving problems with Citrix Systems 4.1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Citrix Systems 4.1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
