A drive has failed in XN11, has been replaced and is booting up now.
Update: Server has failed to come back up. Sorry about this folks, waiting for our KVM to be moved to it now so we can see what the hold up is.
Update 2: There are some filesystem issues which we are repairing, service will be restored ASAP
Update 3: The machine is now online and all VPS are running. We are going through each VPS to complete a FSCK of their individual filesystems to ensure they are clean. If your VPS goes down, please do not try to restart it. It will be restarted automatically once the FSCK completes. Thanks