Are you saing you just buy some server unpack them and throw them into production.....oh man...the lost art of systemadmin, if your system is not stable (in testing) you for sure disassemble it, or send it back. How much money have you lost playing around with your unstable database? Was it more then test your servers for some weeks? Do you buy/build software and throw it into production without testing?

You can test your stuff and be still profitable henzer aws etc would make no money otherwise....you know they test their server much more (sometimes weeks/month)