As a part of Covid precautions driving business trends, Microsoft Teams usage increased exponentially when the solution was added to the default Office 365 suite and increased in functionality. Usage of Teams in 2020 compared to 2019 was up around 600 percent and holds steady as businesses worldwide continue to figure out how to best support their remote workers.
At first glance, admins could believe Teams is a typical collaboration tool, such as Citrix Podio, or a meetings app, such as Citrix GoToMeeting. It is possible for Teams to replace these tools. However, getting there requires significant pre-planning and implementation of additional Microsoft components. Managing Teams within a virtual desktop infrastructure (VDI) environment also requires some considerations.
1. Install Location: Per-machine or Per-user?
2. Endpoint Device
3. Citrix Optimization Feature
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Should I Install Per-machine or Per-user? It is important to understand that Teams currently updates on a bi-weekly basis with Microsoft reserving the right to push “features” at any time. This is one of the reasons installing in AppData is nice because users’ profiles follow them, and they don’t have to update their image every two weeks to keep it up to date. A zero-day or a business enhancing feature released will be able to be introduced to the environment quickly.
However, an environment breaking patch can also be released uncontrolled if installed per-user. For example, Citrix optimization was only available when deploying on the system drive. But with a recent patch, this was no longer true, and Teams automatically switched to Citrix optimization mode, which has limited features. These types of issues result in a significant number of help desk calls until a workaround could be implemented.
In early 2020, it was recommended to install per-user as it allowed preventing Teams from auto-starting. This let users who were not interested in Teams not have it launch and reduced the infrastructure resource requirements of every user having a Teams session. However, as Covid precautions stuck around and adoption drastically increased, it no longer made sense to allow per-user installs to persist and provide inconsistency in the environment.
The migration from per-user to per-machine is automatic. Microsoft will convert the install when a per-user logs into a per-machine image. We noticed that the Taskbar shortcut must be unpinned and repined as it still pointed to per-user install. Also, the Teams Outlook add-in pointed to the old per-user install and had to be fixed with a registry key update. And finally, on rare occasions, the migration did not work successfully; In the session as an admin, Teams had to be uninstalled and then reinstalled.
Pros and cons of per-machine and per-user installments:
How many end devices are needed is largely dependent on whether optimization will be enabled (see section below). If unoptimized, the end-device is less important as most of the computation occurs in the VDI. However, all audio and webcam must still traverse the network to the VDI. Different end-devices map audio/video peripherals into sessions differently based on agent vendor whether Citrix, VMware, or WVD and whether the device is Windows, Mac, or Linux. This can provide a wide disparity in end-user experience if a standard is not implemented.
If optimization is enabled, the end-devices are now rendering the audio/video and transmitting directly to Teams servers. This increases outbound network load to the internet for your branch sites. Different VDI vendors provide different Optimization feature sets based on agent version and end-device OS. For instance, currently WVD only supports Microsoft end-devices while Citrix supports Windows, Mac, and Linux for optimization.
Microsoft has worked together with virtual desktop vendors, such as Citrix and VMware, to implement an optimized mode of Teams. This enables H.264 redirection optimization for audio and video in the Teams app. While significantly improved over 2020, there are still feature limitations in the optimized version of Teams.
The feature set and integration into the Office suite makes MS Teams a compelling app to deploy into your VDI environment. It can be tempting to include the Teams app with the rest of the Office 365 installation to gauge end-user interest. However, Teams uses Electron and Optimization, and some of those limitations require a VDI architect to consider unique design decisions compared to the rest of the Office 365 suite. The fast pace and complexity to implement Teams requires careful planning, design, and proper hardware prior to implementation to prevent data loss and performance degradation. Consider using a managed virtual desktop infrastructure provider to help your team avoid set-up and implementation errors, and keep Teams running smoothly for your entire remote workforce.
To learn more, download the complete solution brief: Deploying Microsoft Teams.
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