Proxmox eat lot of RAM

[wdmarket]

I have installed proxmox on a few servers.
Some of them have free versions, some paid versions.
The problem is that proxmox eats a lot of RAM.
Like on one server, it eats at least 40 GB when virtual machines are turned off.
I did speak with the server provider and they told, me that they have problems with another server also.
The server CPU is epic AMD EPYC 7402P. - https://i.imgur.com/24bXfsA.png
The same problem I have on other servers, older Dell servers. - https://i.imgur.com/A4KSfXL.png

The interesting part is that while ago I didn't had the issues and I also have server with a Ryzen processor and an older proxmox version that need much more resources, but there are no such problems with the ram - https://i.imgur.com/aZiFa13.png
Could it be proxmx has problems with hardware support?
Please help me to resolve this problem.
Best Regards

 

[leesteken]

Like on one server, it eats at least 40 GB when virtual machines are turned off.

ZFS maybe? Lots of threads about that on this forum, but please see the manual: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysadmin_zfs_limit_memory_usage

 

[wdmarket]

Yes, could be.
These servers have ZFS.
Thanks for help
Regards