He waited for years, until it was too late. He presumably knows that she has wiped it. But this is a final warning to her, just in case she didn’t wipe it thoroughly enough.
Hey, Boner. Where were you when Hitlery and Obama let our ambassador and the heroes who tried to defend him die. How long ago was that? What have you done about it since?
If the server itself still exists, more than likely, the hard drive has been removed from the server and destroyed.
Then, if they're really into the sham, a new hard drive was installed and then wiped.
In other words, if they did it right, there's no chance of retrieving any data from the server.