move vm to another proxmox system

Hi, i will try to move a vm1 from system1 to system2.
sys1 ans sys2 are 2 separate proxmox systems, i will use the vm1 also in the sys2.
So how can i do it?
Can i move the files from the storrage to the other storrage?
Can i add the raw images manuel in the vm?
Other ides?