I need a short (~1000 word) report on IT hardware security aspects to be implemented in a Bitcoin trading service. I have running software web front-end and a separate backend, both with independent databases. This report deals with the security of the involved hardware including DMZ, firewalls, separation of the backend from public internet,
... but also some disaster recovery plan. An architecture should be established, briefly depicted and text written. This does NOT include software architecture (front-end, backend, databases) since that is defined already. I need to present this text to an investor for technical due diligence. If the funding round is successful I'm considering giving more consulting jobs. Previous knowledge of banking it security would be great, but general best practices regarding security of sensitive web applications is also required.
I have to add that I need this text within 48 hours (until Sunday 6pm GMT).