No offsite backups existed, as one server was backed up to the other server, so deleting files on both
servers left no usable backups.
From the BBC article:
had no external media storage.
"Some have asked whether or not we had back ups. Yes, we dutifully backed up our servers every day. Unfortunately, we backed up the servers between our two servers.
"The hacker took out both servers, destroying our ability to use one or the other back up to remedy the situation."