Once upon a time, Nicolas Kovacs info@microlinux.fr said:
Both PVE and PBS are based on Debian, and now I wonder if RHEL-based systems have something similar to offer.
I believe Red Hat Virtualization, and its open upstream oVirt, are comparable to Proxmox. I have used oVirt for a number of years. oVirt itself doesn't include backup software (it supports VM snapshots and clones), but there are several third-party backup tools (both free and commercial) compatible with oVirt/RHV, like Storeware's vProtect (I haven't used it but seen others mention it).