Currently we use mysqldump to create an export of our teamcity database then we zip it up. Does maintainDB do anything differently? It also mentions in the [Backup Instructions|http://confluence.jetbrains.net/display/TCD65/Creating+Backup+via+maintainDB+command-line+tool] you should stop the TeamCity server. Is this enforced? Is it bad that we run a dump whilte TeamCity is running?