Replication

Replication is reproducing the data on another machine. It in itself is a form of backup, and is typically used with databases, where a central database will collect all the changes made in a number of decentralized databases, then replicate the consolidated data in the central database to all the decentralized databases. The advantage is that the primary store of the data is in the central database, but each decentralized instance can have a full copy of all the data, and hence good response times for local users. Often, replication is done in off hours much like backups. Off-Site Off-Site backup typically involves making a second copy of the backup data, which is sent off-site, most often encrypted. These off-site copies are used for disaster recovery or in case an on-site backup Volume gets irrecoverable errors.