Hello @aglandorf,
Welcome to this forum, hope we can help you.
First comment from my side, I see some old posts that might help you:
- Storage Creation (datastore)
- Multi-tiered local storage for VMs (this one is a bit old)
- How to add local disk in opennebula host to extend VM storage? (also for an older version of OpenNebula).
Also this video can help: How OpenNebula Handles Multiple Storage Technologies (at least the first part).
Cheers,