5
Proxmox host stops responding, LXC continues
(infosec.pub)
Proxmox VE is a complete, open-source server management platform for enterprise virtualization. It tightly integrates the KVM hypervisor and Linux Containers (LXC), software-defined storage and networking functionality, on a single platform. With the integrated web-based user interface you can manage VMs and containers, high availability for clusters, or the integrated disaster recovery tools with ease.
Huh. Maybe it is related then. For what it's worth I ended up moving to a real drive, still solid state, a while ago and it's been working fine ever since.