See RAID. Starting with Windows Server 2016, Storage Spaces Direct extends storage pools from only one server to a cluster of two to 16 servers. Each server in the cluster has its own storage but ...

Three U.S. Nodes - Unity Node is for storage space only ... experiments intended for looking down at Earth and up into space or for direct exposure to space.

Storage Spaces is an example of something you may have heard of but have no idea what it does that was certainly the case for me for a very long time. But if you want your drives to perform faster ...