We did the exact same thing last year, below is what EMC suggested as a
procedure. We used the same hostname for the new NW server once the old
one was disconnected from the network... It was surprisingly easy. Step
9 took a little while to recover all our indexes.

Networker Migration Procedure
1.      Submit a Host Transfer Affidavit to Licensing. Existing Host-ID:
6355bc6c New Host-ID: 3dbe325d (questions: will hostid change if
hostname and/or IP changes ? - answer- yes)

2. Install Networker on new host.
3. Perform a Full Backup of source server to a Default Pool tape.
4. Perform a Full Index/bootstrap backup of all client indexes from
source server to Default Pool (same tape). Make note of bootstrap
save-set ID / file / record for step 7 below.
5. Take the old server off the network & rename new server with same
name, reset DNS to point old name to new address if IP is different.
6. Load the bootstrap tape from step 4 above into the new tape library
and load the tape into a drive. Easiest way is to use 'nsrjb -nlv -S
slot# -f \\.\tapex'
7. Run 'mmrecov' command to recover server index and media database.
Recovered resources will be placed in /nsr/res.R since they cannot be
recovered into place on a running server. 
8. Shutdown Networker services and rename the existing /nsr/res to
res.old and then rename recovered /res.R directory to /res. Restart
Networker services. Re-apply license auth codes from host transfer
above.
9. Run 'nsrck -L 7' to recover remaining client indexes one by one.
Verify the indexes are browsable via a recover session on an existing
client.... 
10. Run some test backups...

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of kurianv
Sent: Thursday, September 15, 2011 2:42 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] To Migrate Networker 32 bits to another 64 bits
server

Hi, 
We are required to migrate our existing Networker Server Version 7.4.4
Buld 634 which is under Windows 2000 SP4 to Networker Server Version
7.4.5 Windows 2008 x64 Bits. 
Could you kindly suggest the exact procedure for migrating our Networker
Server to Windows 2008 x64 bits . I went through the disaster recovery
guide ?

But it has not said if we are chainging the Hostname whst are steps to
be followed ?

We have installed the  new server wit the new hostname ? Please can you
kindly describe what we should do next ?

Thanks and Regards,
Kurian Varghese

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