How to set up the environment for manual testing ?

Based on the user requirements like the hardware, OS, system conditions etc. set the environment so that it works similar to production environment

According to the production server, the software development company as to make the testing server. i.e hardware( make and configuration) should be similar, the software(OS, web server, application server, database server) and data(if production server has 1 crore data then testing server should have at-least 1 lake data to test) should be similar.