Here are some real-life data about tree installations - X, Y and Z. All are using SSD or NVMe storage. On these systems Postgres (non-timescale) was used, running on the same server, so RAM and core numbers cover both NetXMS and DB engine.

Number of datapoints per second was obtained from the DB by this query: SELECT polling_interval, retention_time, count(polling_interval) FROM items GROUP BY polling_interval, retention_time ORDER BY retention_time, polling_interval;