OpenVZ fake ram or not ?

Hello all,

i have little problem on proxmox.

i created one vps server and just extract some files on it ( no aplication,game servers etc... just files ) and i can see that ram is full:



But on dedicated server is only 1 gb ram used:


Files that I have extract have approximately 8GB


Is it possible that there was a mistake - and that vps mistakenly loaded ram and hdd wrong?

that hdd memory and ram is replaced ?