Welcome to the world of vBulletin ownership
The best thing to do if in doubt is to provide details in a support ticket linked to your professional installation service for your hosting control panel, or to contact your host to confirm the details before sending them in to support.
Once you have the information it sits in a file and does it's job and next to never needs to be gone anywhere near unless you muve servers.
Good luck with starting your community.
peterska2