Server files, backups and databases have separate storage limits. Free space in one area does not increase the others.
Step by step
- Read the error to identify the affected storage area.
- For server storage, inspect worlds, logs and large plugin files. For backups, inspect everything inside /backups, including FTP uploads.
- For MySQL, inspect usage per database and remove data only through an appropriate database tool.
- Download needed data before deleting it, or order an available capacity upgrade.
- Wait for usage to refresh and retry a small write.
Check the result
If reported usage remains inconsistent, give support the server ID, affected directory/database and approximate size.
Important
Never delete world region files or database tables blindly. A full quota can block new uploads and database writes.