5 Common VDI (Virtual Desktop Infrastructure) Mistakes
Mistake 1: Not Involving Users
From the outset of a VDI or RDSH project, end-user involvement is essential to help
your project team understand how workers perform their day-to-day jobs. With an
RDSH deployment, for example, you’re serving up apps instead of full desktops, so you
have to understand how the users interact with the software.
This end-user perspective is one of the keys to ensuring you have gathered the full range of user and business requirements and have a clear definition of the problem you are solving. Clear, widespread communication is one of the keys to project success. For IT, it’s important to involve all parties early on, to start with a blank drawing, and to engage everyone in the process of moving forward. For end users, it’s important that they know what’s coming. To that end, set up a schedule for periodic mailings that talk about the upcoming changes and the benefits they will bring.
Mistake 2: Putting together the wrong team
Virtualisation architects aren’t necessarily the right people for the task, as servers are dramatically different to desktops. Involve people from the server, storage, desktop and networking areas of IT to help build what will be a dynamic and varied environment.
Mistake 3: Defining App and Desktop Virtualization Use Cases Improperly
App and desktop virtualization use cases are built on types of workers and their job
requirements, the applications and devices they use, their requirements for storage and
multimedia performance, and their network connectivity restraints. Given this reality, it’s
important to consider the culture of the organization and its attitudes toward the use of
infrastructure when defining culture and workflow requirements. Does the organization
allow multimedia streaming? Does it have teleworkers who watch high-definition video?
The answers to questions like these should be factored into use cases.
For example, if some workers need to stream video as part of their jobs, you might want
to let video streaming run natively on laptops and publish just the most sensitive data
through RDSH infrastructure. Or, if users have no business requirement to stream video
but the practice is allowed in the work environment and frequently done, you would
want to consider the impact of video streaming in the design of a VDI solution.
Traditional desktops typically provide an abundance of resources to users and saturation
of a resource will not affect other users, but with VDI resources are shared and utilization
of resources is designed to be more efficient.
Mistakel 4: Not Conducting a Pre-Assessment
The desktop and application pre-assessment helps you gain an understanding of the
workloads that will run in the virtualized client environment and their associated technical
requirements. The information gathered in this phase of a project is critically
important to the design of the VDI or RDSH solution. Without a pre-assessment,
assumptions will be used to design the solution, which adds risk to the project. For
example, the selected hardware may not be able to provide the required compute or
storage resources, which could lead to additional capital investments that could have
been avoided if the solution had been sized properly.
Mistake 5: Not understanding impacts to the performance of other systems
Network bandwidth is an especially important consideration on wide area network (WAN) links. If the WAN links cannot provide the bandwidth for a VDI environment or the latency is too high, then local deployments should be considered.
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