The tests you are talking about are done before the launch of a game, or any other product, the products are tested and brought up to standards, before their launch in production or on the market, and for all products these are the classic procedures, usual and logical. I am talking about an internal development server = test server, designed to test the game, the updates, and saves. My doubt with lineage 2 concerns the updates (big updates), therefore the modifications which change a lot of things in the game, and which can impact others things, there were late restarts of the server, and NC soft puts a little twit saying "in 1 hour, 2 hours etc", it can happen a delay, it's not at 100%, but that means that it did not go well. Restarting classic updates ( every wednesday) on the other hand, are often early. These tests must be carried out beforehand and are necessary to anticipate this kind of inconvenience, in almost all businesses, if you don't test first, it can have serious consequences. They don't care so much, apparently, but here it's not dramatic, it's for the principle, it's the basis for being taken seriously.
I love this game !
Thanks !