When you Import Hyper-V 2008 and Hyper-V 2012R2 Management Packs on the same Operations Manager Management Group you will get the following warnings from every Hyper-V 2012R2 Server.
This warnings happend because the there are
2 Monitors which are bind to the Class Hyper-V Virtual Network,
3 Monitors which are bind to the Class Hyper-V Virtual Network Adapter
1 Monitor which are bind to the Class Hyper-V Virtual Hard Disk
which are also used for the Hyper-V 2012R2 Environment. The big Problem now is that there are some changes at the Hyper-V enventlogs in Hyper-V 2012R2 and the following eventlogs are missing.
Hyper-V-Network-Admin
Hyper-V-Image-Management-Service-Admin
What you can do is for example to disable the following Monitors for the “Windows Server 2012 Computer Group”
| Class | Monitor | |
| 1 | Hyper-V Virtual Network | Port Connectivity |
| 2 | Hyper-V Virtual Network | Port Disconnectivity |
| 3 | Hyper-V Virtual Network Adapter | Static MAC Address |
| 4 | Hyper-V Virtual Network Adapter | Dynamic MAC Address |
| 5 | Hyper-V Virtual Network Adapter | Mac Address |
| 6 | Hyper-V Virtual Hard Disk | Mounted Drive Read-only |