As I have slowly started to shift more workloads into my homelab I have started to ponder the right monitoring solution. I would like to be able to see hardware

As I have slowly started to shift more workloads into my homelab I have started to ponder the right monitoring solution. I would like to be able to see hardware and OS metrics for my entire fleet in one area, regardless of the host, vm vs bare metal etc... Munin, Monit, Nagios, Zabbix and a few other tools are on my list to try out. My biggest concern is around the data management. Ideally the underlying datastore can be moved, expanded, etc... as I sort out how much history I want to keep. What do y'all use for this? I have 2 VM hosts (esxi), 1 bare metal box, and a handful of ubnt networking equipment.