Usually you will get all the data within 15 minutes to an hour based on my experience. As far as necessary info, it all depends on what you are trying to do. If you need to troubleshoot then you can do it right away. Most of the time, the people that need a lot of historical data are capacity planners. As you don't get vROPS capacity metrics yet such as idle VMs, capacity remaining %, oversized VM, etc.
Usually you will get all the data within 15 minutes to an hour based on my experience. As far as necessary info, it all depends on what you are trying to do. If you need to troubleshoot then you can do it right away. Most of the time, the people that need a lot of historical data are capacity planners. As you don't get vROPS capacity metrics yet such as idle VMs, capacity remaining %, oversized VM, etc.