Increase vROps retention

I'm running vROps 6.3.  I need to increase my retention period of all metrics in vROps (cpu, memory, storage, network, waste, etc.) from the default 3 months to 12 months.  What are all the settings I need to tweak to accomplish this?  Can it all be done in the UI or do I need to do it on the command line as in 5.x?

Thanks!