We have a 1xMOM 4xEM production cluster. We are dealing with a lot of historical metrics (>1500000 per EM). This fact decreases the performance of the EMs at all. But I want to keep metric data for 1 year in the smartstor. So I would like to extract the metric data from smartstor e.g. older than 3 month and put it on one or two read-only EMs so that I would be possible to analyze old data older than 3 month but not decreasing the "live" EMs at all. Is this possible?