By en:User:Cburnett – Own work This W3C-unspecified vector image was created with Inkscape., CC BY-SA 3.0, Link

In addition to our daily backups, at least RAID-1 applies to our servers. In this way, we ensure that if one disk fails, the data is duplicated and therefore safe. The technicians in the data center can then replace the defective hard disk (usually within 2 hours), making the server fully operational again.