I see you've noticed the critical question that is not being asked.
1) Who exactly was operating the server in question? It sure as hell wasn't Hill or Bill.
2) Where are the backups? They exist. I guarantee it. This email server was essentially operating as the departmental server for the privileged few who are above the law. Do you really think the server was being run in such a slipshod manner that a hard disk crash would have destroyed all the schemes they were working on at the time? Ha!
Fortunately for the Clintons, they are being carefully protected by the powers that be to make sure that these questions won't even be asked. That's why the initial reports were that it was being run out of her house. This is patently absurd on several levels. It was done to make it appear to the unwashed that it was a shoestring affair so you wouldn't be surprised if information went missing.