They would quite possibly try to clone it but they would leave it running for sure and try to make it look like normal down time. I imagine SR registered the server anonymously so the registration records shouldn't be very helpful. If they get physical access to the server and take it down they just show their cards, and there is probably a complete off site backup and it would be put up on a new server in no time. A technique some people use is to change the physical location of their server on a frequent basis . Might be a worth while technique for SR. If it takes the feds three weeks to trace a Tor hidden service, it would be nice if the hidden services physical location changes every three weeks. Will get expensive to do this with dedicated servers though. Another thing they could consider is hosting with the russian mafia. Then even if the server is traced cooperation isn't likely, they host CP on clearnet and flip interpol off. http://freehaven.net/anonbib/cache/hs-attack06.pdf