Proxmox 6.1 ISO

6.1 is totally outdated and we do not offer this for download. why do you need this?

use lastest 6.4 or even better, current 7.1.
 
I need it for testing, specifically to check what is the ceph clietn version and if it is updating during updates from 6.1.x to 6.4.x on which my current cluster is. It is regarding another post https://forum.proxmox.com/threads/p...after-adding-ceph-storage.104937/#post-452018 so it would be faster for me to test vesting the 6.1 version and updating it to the version my current hypervisor is on, then testing more on the client itself and follow the best most safe path of updating it hopefully not having to move 230 VMs in the process.

It is simply easy and quick to do that this way.
 
I am pretty sure there are other ways, but you can ask our enterprise support if they can share a 6.1 ISO for you (after they found one in their archives).

As you run Proxmox is business setup, I assume you have a support subscriptions?