IIUC it's the kernel EDAC subsystem rebooting the server for you. If you turn it off you'll get non-ECC behaviour, but in this case you'll also get really inter

IIUC it's the kernel EDAC subsystem rebooting the server for you. If you turn it off you'll get non-ECC behaviour, but in this case you'll also get really interesting system issues because as the sibling comments have said your RAM is actually faulty :P