We used Unitrends for Microsoft Hyper-V Cluster, VMWare ESXi Clusters, physical servers, virtual servers, SQL databases, and Exchange DAGs databases.

I've been deploying it for most of my clients because it comes in an appliance model and supports any operating system, including legacy operating systems. Some customers prefer the appliance model rather than just getting the software and worrying about integrating it.

It's been useful for our customers who rely on legacy systems and fail to find backup solutions that are compatible with their legacy systems. For example, in the industrial sector, we have people relying on a system that's running on Windows 2000 for 20 years. Nobody really supports these operating systems these days, and only a very few vendors do that.

Our primary use for the Unitrends Backup solution is to protect our physical and virtual servers at our small rural K-12 school. By installing the agent on each necessary server, we can back up both our physical servers (HP or Dell, etc) and also our Windows Server 2012R2, 2016, or 2019 versions.

We use the website graphical user interface to continually configure, monitor, and verify our various backups as well as get daily email reports that show our current status of backup success and failures.

Our primary use case for Unitrends is backup. 

We use Unitrends Appliance across our infrastructure to backup both physical servers and virtual machines.