Ceph

Ceph is a distributed object storage system that supports both replicated and erasure coding of data. So you can design it to be fast or efficient. Or even both.

It’s complex compared to other solutions, but it’s also the main focus of Redhat and other development. So it may eclipse other technologies just through adaption.

It also comes ‘baked-in’ with Proxmox. If you’re already using PVE it’s worth deploying over others, as long as you’re willing to devote the time to learning it.