We have a hub and spoke network of 150 Exchange 5.5 Sites. The centre Site
of the hub is just a routing Site with 2 servers (no user mailboxes). All
spoke Sites are connected to the hub Site with X.400 connectors (to one or
other of the servers).

We now need a Business Continuity / Disaster Recovery environment for the
Hub. We want to build 2 spare servers in another location, and have these
servers take over the role of the routing hub in as short a time as
possible. Our plan is to build these spare servers as copies of the live
servers (same NT name, same IP address, same Exchange configuration). They
will be kept off the network until the central hub is no more, and then the
network will be switched, and these servers will become live.

How should we build the server??
One idea is: Build a BDC in the normal domain. Then disconnect the BDC from
the network, and promote it to a PDC. Then the new (member server) Exchange
server can be built off the network and connected into the stand-alone
domain using the new PDC. The Exchange server and configuration can then be
restored, probably on a monthly basis to maintain it in (approximate) step
with the live environment.


Anyone know whether these ideas will work? Anyone got other ideas that we
should explore?
At the present time we are less worried about the spoke Sites, which is
where the users reside.


Thanks, 

Chris



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