Note: Windows Server 2022 is partially compatible with later hotfixes of the 2020.2.6 release, but Windows Server 2019 remains the most stable, natively documented OS for this specific version. Database Requirements (Microsoft SQL Server)
Always place the SQL Server on separate physical or virtual hardware from the NPM polling engine if monitoring more than 500 elements.
SolarWinds NPM 2020.2.6 System Requirements & Free Evaluation Guide