I am curious how many are using Proxmox with a NAS device to store VMs or containers as your home lab virtual machine storage. If so, what are you storing? Which model are you using? Are you using NFS or iSCSI?
In my setup I store all of my iso images and pbs backups on my synology in an nfs share. All of the actual container and vm drives are on lvm thin local.
I am using a custom NAS server for shared storage. It's a Core i7-4770k, 32GB RAM and a pool of 6 HDDs attached to a HBA. I run ProxMox as the hypervisor and TrueNAS in a VM with the HBA passed through.
Like @jackalltrades, I was running just PBS backups and ISOs there with SATA SSDs in the clustered ProxMox nodes for local thin LVM storage with ZFS as the filesystem. Additionally, I had ZFS set to to sync changes on all of the local drives between all the nodes so that I could run any VM/LXC on any node at anytime. However... ZFS write amplification killed two of the SATA SSDs and left three other drives with less than 20% health after about a year of light use.
I am now using an NFS pool on the NAS for VM storage and iSCSI volumes for the LXCs. I have a Synology NAS running PBS in a VM to back up every the VM image, including the image for the main NAS.