I performed another Callmanager and Unity upgrade the other night. Upgraded Callmanager from 4.2.1 to 7.1.3bSU2 and Unity from 4.0.5 to 7.0.2 – all on new hardware. The callmanager upgrade went almost flawlessly. We had an issue with DHCP for the phones (we were previously running DHCP on the old windows based callmanagers) but got that resolved and the phones upgraded and worked without a hitch.
I had never used the COBRAS tool for an upgrade before. I built the new Unity server with a new hostname and new IP address and when we began the cut-over, I attempted to do the COBRAS import on the new server but it failed on the subscriber import because the subscribers already existed on the old unity server. Apparently I hadn’t read the COBRAS instructions closely enough as I was not anticipating this. I assumed that it would automagically migrate them for me. After reading the COBRAS notes it lead me to use the GLOBAL SUBSCRIBER MANAGER (GSM) to move the subscribers from one server to another. I shared the COMMSERVER\STREAM FILES properly and I could see both servers in GSM but it would not let me move the users. I could select a user but it would not allow me to select the new server to move the subscriber to it. I ended up performing a BULK DELETE on the old server and then performing the COBRAS import on the new server and everything worked almost flawlessly after that. The COBRAS tool can be downloaded here.
-Go0se
How did you migrate to CUCM, was it via two stage process? There is no direct upgrade path from 4.2.1 to 7.1.3bSU2 as I can see.
We used the “Data Migration Assistant” (DMA) tool that can be downloaded from Cisco. You must download the exact version of the DMA tool that matches the version you are going to. The DMA tools for UCM 7 can be downloaded here: http://is.gd/cZVBh (CCO login required). If memory serves, yes we went directly from 4.2.1 to 7.1.3bSU2. Read the DMA release notes. You simply install it on the Windows publisher and run a “dump”. When you are installing 7.1.3 it will ask you if you wish to import data from a previous version and you answer yes, and off it goes.
-Go0se