Failure on Proxmox ZFS

[Jos Chrispijn]

Dear team,
Just ran into an issue again with my proxmox (2nd time).
Can you confirm what is going on here?

https://ibb.co/qrBbKNR
https://ibb.co/C9WHgVN

Is this a hardware failure or memory related? Need to know in order to 
solve/swap computer part(s).

After reinstalling proxmox from start the issue stays away from some 
weeks and the occurs again.
No powerfailures during this period.

What now occurs is that on my installed FreeBSD I can login and perform 
a 'zpool scrub rpool' but after some time (sometimes a day), I get this 
display on the Promox computer and cannot log in but only reset by 
powerbutton.

We reinstalled proxmox from start twice and after some weeks this issue 
occurs: I notice as my hard disks are activated every 6 seconds.

Can you pls advise? Thanks in advance.
Jos Chrispijn