Management. One of the biggest draws of VDI is that it makes your management very simple. If you have a hundred desktops and your software vendor releases an update, you would need to update 100 desktops. With VDI, you only have to update your server’s copy and have the update propagated to all your VDIs. At the very least, it saves you the trouble of having to go to 100 different sites to do the update. But can you imagine if there was something wrong with that update that your software vendor released? That would mean that you would be applying the update out to 100 desktops that would all have that problem. And this is the reason why most IT professionals who are overseeing VDI desktops put off updating the software than having to contend with problematic updates. This leads to even bigger problems of having desktops that are less than secure or are running below par.
Do all these mean that you should avoid VDIs altogether? Well not really. First, you might want to use as few images as you can possibly get away with. You can make use of a single “golden image“, which is what you would need to update in order to keep your VDI infrastructure all current. The golden image will have all the applications that everybody in your organization is using, and it would need to work with software that handles provisioning of these applications to different users, as well as handling the licensing requirements. You would also need to monitor your VDI usage to see what desktops are not used and therefore be up for deletion. This way you can reuse the licenses for other users.
Photo courtesy of markuz.