If you do have backup tapes, you can restore the tapes to temporary servers in another location to get back to business quickly. Keep in mind that this solution also means you'll need to perform the same operation in reverse with the new tapes you make from the temporary systems in order to get back in action in your original environment.
This is why planning and documenting is so important. Your business has to have the ability to make hard decisions even when all the key members of staff are not available. Can you determine how long the problem is going to last? What DR systems do you have in place? Will implementation and restoration of your DR plan, or some part of it, actually have any real business benefit? Will implementation end up restricting access to data and/or applications in the long term?
Regardless of what type of DR systems you've implemented, non-traditional disasters require making some tough, quick decisions. In many cases, you'll eventually be able to get back to your original location, but what you do in the interim could make or break your business.
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