I read the forums posts regarding the CCM upgrades and still got some unanswered queries.
1. Consider I have CCM 5.1 on MCS 7825 Server Active partition. When going for a upgrade, the system installs all the CCM6.1 on the inactive partition.
While doing this upgrade, is it advisable to move the publisher on a separate network so ( Dialplan/locale/ 3rd party application/devicepack Installation) that above can be completed successfully on the publisher and this will not affect the IP phones which are registered to the subscriber which will still runs on 5.1 version ?
( we have customers IPT serving multiple geographies and I need to ensure that minimal downtime is present and hence this query)
Once the upgrade is successfully when the publisher is connected back to network, whether the system will retain the old data or we need to configure it from scratch.
2.When we use PAT, Cisco will provide new node licenses for CCM 6.1 .What about the DLU on the Pub.?Existing DLU registered on CCM5.1 when used on CCM 6.1 will it be working automatically?
3.Consider customer has one 5.1.1 on the inactive partition and 5.1.2 on the active partition.During the upgrade whether system will delete the old 5.1.1 automatically and installs 6.1.2 or it will state no space avaialble and halt the installation ?
4.As the upgrade path doesnt allow customers to go directly for 6.1.2 from 5.1.1 in a single maintenance window, is it advisable to first upgrade them to 6.1.1 and then move to 6.1.2 on a second maintenace window or carry out everything in a single maintenace window
Anythoughts regarding this much appreciated