Data replication

Another option for data backup is to have duplicate systems in place. This is done for a few reasons:

  1. Volume of data is too large to fit in a backup medium.
  2. To minimize downtime of recovering data. Usually the data on another server is available immediately.
  3. It will take a long time to save date to tape.

Duplicate systems can be placed in the same data center, or duplicate systems can be placed in an another data center.

If duplicate system or systems are placed within same data center than these systems will be affected by the same geographical conditions such as hurricane or earthquake.

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