[cisco-voip] Unity Upgrade and Migration Scenario

[Nick]

I have a scenario where I need to move a Unity 4.2 voicemail only server to
a different location and change the hostname and IP address. This is all
part of a migration to a new CUCM cluster that has been built separately
along side the original cluster. There is also another Unity 4.2 server on
the original cluster which may become extinct and the users migrated to the
first Unity server. The customer would also like to upgrade to a newer
verision at some point. .

Originally at the time of migration I was looking at backing up the database
of the Unity server using DIRT then moving the server to the new location,
rebuilding the server with the new IP address and hostname on version 4.2
and then using DIRT to restore the data. Then looking at migrating the users
from the 2nd cluster and then upgrading the version from 4.2 to 7.0

However, I have now been thinking to get another server, build it to version
7.0 at the new site with a different hostname and IP address then use COBRAS
to back up the first 4.2 server and restore the data to 7.0. Integrate with
the new CUCM cluster and complete testing. Then before the migration takes
place use COBRAS again to back up both of the 4.2 servers and restore
additional data and subscribers to the new 7.0 server.

Is the 2nd option a viable solution and if can anyone make any further
suggestions on the best route to take?

Cheers

Nick
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