How to adjust carbon in graphite to save metrics redundantly?

I have the following problem: I want to collect data from several places (or servers). Now I want to store all the collected data locally in this place (via the carbon cache, storage schemes, etc.), but in addition to this I want to combine (carbon-aggregator) this information (to reduce the load on the network) and send it to another (main or central) place where all important indicators from different places are stored. The reason for this is that Internet connectivity in several places is not always so reliable that some places are in developing countries. Therefore, a local backup with all data will reduce the risk of losing important data. I was thinking of tuning where I use a carbon relay to duplicate data. One goes to the carbon cache, the other to the carbon aggregate, which translates it to the main location.Is it possible? How do I achieve this configuration? Or what would be another opportunity to achieve my goal. I appreciate any help.