Openmediavault freezes tight

Hello everyone! Faced with an incomprehensible depressing god. regularly once every one and a half to two weeks, my OPENMEDIAVAULT server freezes tightly, no VM, no container, no web muzzle is available. Only a physical reboot of the server helps. Now I have found it again, but I will be near the server only in the evening. I don't understand how to reboot it remotely, since ssh - connection timed out, although the server itself is physically turned on.