Unraid OS is an operating system for self-hosted servers and network-attached storage. It lets users combine hard drives of different sizes into one array and can run Docker containers and virtual machines on the same machine. The software is installed on the customer's own hardware and sold under paid licence tiers. The vendor presents it as commercial software and names no open-source licence for the product.
Unraid is developed by Lime Technology, Inc., which the vendor's about page describes as headquartered in San Diego, California, in the United States. No majority owner or parent company is named. Because the system runs on the organisation's own servers, data stays on infrastructure it controls. For a European organisation the considerations are mainly the vendor's US jurisdiction for licence and update relationships, the closed-source nature of the software, and the need to rely on the vendor's update and licence terms over time.