I stumbled onto a project called ANAS and spent some time looking at what it adds to Proxmox VE. The interesting part is that it runs directly on the Proxmox node. It also adds storage management inside the existing PVE web UI instead of making you have a separate appliance or VM running on top of Proxmox.

It can manage ZFS, SMB/NFS shares, iSCSI targets, snapshots, replication, PBS backup/restore, and its own mixed-size Hybrid RAID implementation. Very cool.

I wrote this up from the angle of whether this could replace the common "Proxmox + TrueNAS VM" setup. I don’t think it replaces TrueNAS across the board, but I think the architecture adds a lot of value and is an interesting take on storage in Proxmox moving forward.