We've just deployed another MySQL database server for customers on the shared system. It goes by the name of "db2.modwest.com", and it's running MySQL 5. It's a powerful, brand new server and we encourage anyone using the older database servers to switch.
Adding a new database on the new server is easy. Just log into OnSite and click Add or Drop Database. Right now, the migration process is manual, but we'll be glad to assist upon request. One caveat: if you're running an older PHP application and currently using "db.modwest.com" (which runs MySQL 4.1), double check that your application is compatibile with MySQL 5, because there are some differences, such as new reserved words.