MySQL disk quota is the maximum allowed size of one MySQL database. If you exceed this quota, you'll be charged for overlimit at a different (usually higher) price.
To change MySQL disk quota, do the following:
1. Select MySQL DBs in the Databases menu.
2. Click the MySQL Database or the Edit icon on its right:
3. Click the Change button against the Quota field:
4. Enter the new quota.
5. Click Submit.
6. Agree to additional charges.