Hi,
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
original"
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...
Regards
Markus
[1]: http://en.wikipedia.org/wiki/Replication_%28computer_science%29
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