- Silver, 250 points or more
We have ONE cluster with 3 CCM4.13 servers and going to upgrade to 6.12 with 3 brand new servers.
Try to read all the doc, but somewhat confuse a little:
I know that I have to run Callmanager upgrade utility and DMA 6.12 and correct all the errors and warnings if there are any at DMA log.
However, I dont know the sequenece how to install CCM6.12
Should I install CCM6.12 as a publisher first, then import DMA? Then install CCM6.12 at the rest of servers as subscriber??
Should I install CCM 6.12 as publisher, then subscriber? And import DMA database at last??