Continual database crashes

  1. No. Mine is way larger. But you must make sure that you never run out of free space on that drive. So keep an eye on it.
  2. Only manually save that very folder. There is a Powershell script to aid in this: PSA: Script to back up and restore Plex app data on a Windows system
  3. Leave your server running over night. It will perform the maintenance on its own. Scheduled Tasks | Plex Support