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Implementing Cisco Networking Solutions by Harpreet Singh

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Planning a disaster recovery

A backup data center is another way of providing redundancy to the complete data center in case of a complete DC failure, which could be due to a building collapsing due to a natural calamity such as flood, complete power outage, or connectivity loss or any other reason. A backup DC, generally known as a disaster recovery center, or a DR site, has the infrastructure of the DC at a smaller scale. This would ensure that services can run if there is DC site outage. Typically, the DR is at a geographically different location, and the data is replicated using a Layer 2 link between the DC and the DR to ensure that the DR site always has the current data, and can provide services. Note that, with the emergence of public ...

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