How to Upgrade OM2007 R2 Agents to OM2012 SP1 - Parallel Environments
This upgrade path contains an Operations Manager scenario with parallel environments, sharing agents, so that the original Operations Manager 2007 R2 environment is left intact. After the upgrade, the agents have been upgraded to System Center 2012 Service Pack 1 (SP1), Operations Manager and are fully capable of working with native System Center 2012 Service Pack 1 (SP1) functionality. The SP1 agents are also able to “talk” to the Operations Manager 2007 R2 management server.
In this parallel environment scenario, we support upgrade of Operations Manager 2007 R2 agents with the latest cumulative update (CU6).
If you want to maintain your Operations Manager 2007 R2 environment you can install System Center 2012 Service Pack 1 (SP1), Operations Manager in parallel and just upgrade your agents using the following process.
Retain the original Operations Manager 2007 R2 environment.
Set up an additional, new System Center 2012 Service Pack 1 (SP1), Operations Manager environment with management servers, gateway, Operations Manager Database, Operations Manager Data Warehouse, console, web console, and reporting server. See Deploying System Center 2012 - Operations Manager for more information.
Upgrade the Operations Manager 2007 R2 Agents to 2012 SP1 using Push-Install or Command Line options as appropriate. See How to Upgrade an Agent to System Center 2012 SP1 - Operations Manager for more information.