apoc9009 wrote:
Translation for you:
A Backup is a File or Set of Files thadt contains the Data of your Business critical Informations. It should not be Archived on the same place, the same House or the same Room.

I disagree, a backup does not necessarily have to be a single file or a set of files. Wikipedia has this definition:

  "backup refers to making copies of data so that these additional
   copies may be used to restore the original after a data loss event."

While for "replica", it states:

  "replica is a copy that is relatively indistinguishable from the

Thus a backup can very well be thought of as replica, and vice versa.

A Replication Database has nothing to do with a Backup, it works only for Failover if the Primary
Database has a Mailfunction.

That's certainly plain wrong, see multi-master replication where failover doesn't make any sense. Wikipedia again (although that's unfair, as I've contributed to that definition myself) [1]:

  "Replication is the process of sharing information so as to ensure
   consistency between redundant resources"

..for example a master database and a backup.

Keep in Mind: Backup is NOT Replication!
Write it down 100 times and maybe you understand

A backup IS a replica. A backup IS a replica. A backup IS a replica. A backup IS a replica...



[1]: http://en.wikipedia.org/wiki/Replication_%28computer_science%29

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