Ooops ... missed the disk.
Only (other than what's already been asked) other thing is partitioning of what assume shows multiple devices?
All in one box needs to be aware of where the DB's live ... typically that is /var/lib/mysql/ with MySQL.
And how much space there is on that partition ... never ever run out of room. Databases don't like that at all!
4 cents,
'SoS', Ken