Expand the XenApp Environment
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Most organizations choose to roll out an enterprise XenApp environment in phases The original scope of the project is often less than a complete enterprise deployment As phases are successfully implemented, and the user surveys show improved satisfaction with IT, the scope of the XenApp environment can be expanded Providing feedback to management about the existing and expected financial savings can help to further promote XenApp expansion
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Prepare for Future XenApp-Enabled Opportunities
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Once the XenApp environment has been expanded throughout the enterprise, the organization s IT department should run exceptionally well Employees will have more computing capabilities than before at a much lower IT budget and with fewer IT personnel The organization will also have opportunities that go beyond those that are realistic in a distributed PC environment We discuss some of those opportunities in this book, such as business continuance, more efficient centralized storage devices, and greatly enhanced security and virus protection However, other possibilities are now potentially available as well For instance, a large janitorial organization might decide to have a thinclient terminal manufacturer make their terminals look like time clocks in order to enable janitors to enter data right into the ERP application A construction company might outfit foreman and inspectors with wireless tablet devices in order to have real-time information flow back and forth from the job sites An organization concerned about ramifications from the Sarbanes-Oxley Act might introduce third-party products such as KVS, which will enable them to track and categorize all e-mail documents for quick and simple discovery
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CAUSES OF PROJECT FAILURE
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Examples of application delivery failures are, unfortunately, not in short supply They often occur when an organization implements a XenApp pilot or beta with a goal toward enterprise expansion, but then forgoes the rollout Many organizations approach a Terminal Services implementation from a PC networking perspective Although it is sometimes possible to deploy a successful Windows 2003 Server or Novell network without extensive planning and piloting, this will rarely work in an application delivery solution Both cultural and political aspects are added to the technical challenges to make unplanned deployment nearly a guarantee of failure
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Inadequate Preparation for Organizational Change
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IT often underestimates the impact of an application delivery model on the cultural, political, and other aspects of the organization Preparing for the organizational change as described earlier in this chapter is a key component to a successful enterprise deployment
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Skipping Project Planning Steps
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Many organizations skip the pilot, project definition, and infrastructure assessment steps and go straight to project planning, or even a beta This is bound to be troublesome if not an outright failure
Lack of a Proof-of-Concept Pilot
The proof-of-concept pilot is essential for testing all applications under an application delivery model before implementation Proceeding immediately to a production pilot or beta can leave users frustrated with application performance or reliability, or both Even
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a small number of frustrated users can provide the type of negative feedback that will quell any further server-based computing expansion
Lack of a Project Definition Document
Some internal evangelists might be sold on the idea of enterprise application delivery solution and persuade management to implement one without enough thought to the objectives, scope, roles, risks, and success criteria Without a project definition document, the planning, project management, and implementation teams have no touchstone with which to keep the project on track
Lack of an Infrastructure Assessment
Project design committees often like to skip the infrastructure assessment step and jump straight to planning This tends to be the most enjoyable part of the project, when participants contribute their knowledge to build a solution Unfortunately, it is virtually impossible to create an optimally effective plan without a detailed infrastructure assessment Additionally, infrastructure flaws that are tolerated under distributed computing are likely to be amplified in an application delivery solution When users become completely dependent on a central server farm for executing their applications, the infrastructure has to be extremely solid