![]() The various terms and acronyms used to describe different virtual digital environments and architectures can lead to some confusion. They use less space, are a lower-cost solution, do not require advanced skills to be managed, and are a good option for environments where changes to the OS are not needed. In non-persistent VDI, all users share a pool of virtual desktops.The advantages of non-persistent VDI are clear. Changes to settings, new applications installed, and new files are not saved “persistently” in this model. The VDI will fold back to its initial configuration and settings whenever the user starts a new session. Any changes made during a session are not persistent. ![]() Customization in this type of VDI is applied as a layer on top of the OS. In a non-persistent VDI deployment, customization and personalization are possible but limited to each user session. Additionally, companies that deploy persistent VDI will require an in-house IT team with greater skills, as these types of VDI are more complex to manage. It uses more storage space and therefore is also more expensive. Despite its benefits, persistent VDI has drawbacks. Persistent VDI is usually used by developers and IT professionals who need to exert greater control over the OS. These changes are saved and will be available for the user the next time they log in. Users can make changes to their desktops, save files, change settings, and install new apps. Each image is stored on the central server and assigned to each user it belongs to. In a persistent VDI deployment, each user has its own virtual desktop image. In turn the level of customization will affect storage requirements, costs, and skill levels required to manage the VDI. The main difference between the two is the level of customization allowed. VDI vendors and cloud providers usually offer two types of virtual desktops: persistent and non-persistent. From the users’ perspective, operating a VDI is just like using a physical computer. The VM processes the users’ actions and sends the output back, while the VDI gives users full visibility. Once the users are connected, the actions they take on the VDI are transmitted to the VM. The next step is to set up the remote desktop connection broker, which will manage the link between users, the VM, and its VDI. Then they configure the VDI and add the OS, applications, and other resources. When creating a VDI, IT teams use a hypervisor to create and manage a virtual machine (VM) on a physical server. Once connected, the user will see their home desktop switch to the VDI image, allowing the user to connect to the remote OS, access its files, use its apps, and more. The VDI hosted on a centralized server, in a physical data center, creates a virtual desktop image that can be streamed to users’ devices when they connect via a network. VDI runs on server hardware, usually on the cloud, with Windows VDI being the most common OS deployed, though Linux, macOS, and other OSs can also be deployed. Bottom line: VDI technologies continue to grow.How virtual desktop infrastructure works.
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