Came across the following tool that will eventually be posted on the NOW site (internal for now). The following is a brief description of the tool.
There is no upgrade path from OnCommand Unified Manager 5.x to 6.0. Therefore, any critical data monitored in Unified Manager 5.x cannot be migrated to 6.0. The Unified Manager Migration Utility is designed to address this issue. Customers can use the utility to migrate critical data from Unified Manager 5.x to 6.0. Users can only migrate cluster-mode specific data. By using the utility, you can migrate the following:
Volume History [Weekly, Monthly, Yearly]
Aggregate History [Weekly, Monthly, Yearly]
Object-level threshold configurations
Global-level threshold configurations
The Unified Manager Migration Utility can upgrade from 5.1 and above to 6.0.
Yes we are working on a Migration Tool which would provide the capability to migrate some of the configuration and historical data from UM 5.1 c-mode to UM 6.x, as mentioned above. The tool is currently under development, once the tool is ready it will be posted on the NetApp Toolchest.