Discuss possible issue with storage for metrics services

There have been various discussions about what is the best long term strategy to scale metrics services.

The long term run, at the time of writing, is to concentrate all our storage on metricsdb which represent the pipeline v2.0 with postgresql and Victoria Metrics.

Some issue have been discussed regarding the long term growth rate of this setup.

I understand tpa now can offer object storage, but we are now more than 1 year into developing the new pipeline and there are many issues that we should consider on metrics side. This ticket though, is not to discuss those issues as much to understand what tpa can support in the long run before making a development plan from the network health perspective.