Backup Solution Windows Server

Hi!

We are using different Server-Versions at different customers. Mostly Server 2008 R2, SBS 2011 and Server 2013.
Some of them are using Exchange and all of the customers want to backup their files (or Databases).
Does anybody knows any software to use? We already tried NovaStor which failed almost every time and the configuration is very awful.
We also use Altaro for backing up HyperV-Machines which works very well, but Altaro doesn't backup standalone server.

So. Anyone here with a good idea?

Thanks
Jens