Realtime disaster recovery? Is it reasonably possibe?

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Well, while I know all of the standard methods for disaster recovery
I've been unable to find a single company with a product that would
enable real time or close to real time disaster recovery that can work
between different physical locations.

All of the ones I've looked at build a queue for storage and the remote
side is not fully accurate unless the queue is pushed to the remote
server.

So, take this example:

Site A
SBS 2003 Prem, Exchange, SQL, no ISA
Win 2003 Std, Term Server, apps, flat file DB's

Site B
Same as site A, same exact hardware, not used unless DR is needed.


Goal - with a few clicks, and a few public DNS changes, provide
continued operations for all remote offices (no people work out of site
A, all are remote), via RD (not RWW) into Terminal Server (uses public
name so it's easy to reach with a DNS change).

I've talked with companies that offer many solutions, but they can't
seem to capture data in real time and move it across to the remote site
in a manner that alleviates the queue need or that the data is not 100%
reliable without the queue.

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