If your data is that important, you must also ensure that your plan B involves keeping a local copy of the data in the datacenter where the data originates. If you're really talking about Petabytes (TBs can be transferred faster than you can fly them if you have enough cash) then the steps of shutting down services, copying data onto a backup, extracting the storage media, driving to the airport and flying, driving to the destination and inserting the storage media into your SAN or compute bubbles, will still take a long time.