Best NBU7 Migration Strategies?
I'm in the process of replacing my backup hardware. Would anyone suggest the best migration strategies for the following two scenarios that I need to complete:
1) Migrate NBU7 Master from Win2K3E-R2 SP2 (x86) to Win2K8E-R2 (x64) with the server name/IP changing.
Is this even an issue or should I simply be deploying a new master and migrating the media servers individually? I'm most concerned with retaining the catalogues from the media servers managed by the existing master.
2) Migrate 2 NBU7 Media servers with NDMP and more importantly the DataDomain OST plug-in from Win2K3E-R2 SP2 (x64) to Win2K8E-R2 (x64) retaining the same server name/IP?
The OST side is of greatest concern, though online documentation goes some way towards explaining the general process of "decommissioning" a media server. Perhaps I'm just missing some particular nuance in the process? Again, I need to ensure that I have full access to all existing backups.
I did a test media server migration to the new master which wasn't particularly straight-forward (I lost, or didn't properly move over the catalogues), though I did at least retain the policy definitions.
Any help or suggestions appreciated. I guess it'd be nice to have a step-by-step guide, rather than trawling through multiple documents for one paragraph here, another there, etc. But perhaps I've missed an obvious solution.
TIA.