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Since hundred percent up time service delivery is crucial in any business it is very hard to achieve the same without a Healthy Data Center, Proper Business Impact Analysis, Developing Business Continuity Strategies,Developing and Implementing Business Continuity Plans and finally Maintaining and Exercising those Business Continuity Plans.
Production Data Center is the data center that is used for day to day operations, It can be on premise or co-located outside physically or event hosted completely outside on the cloud.
DR Data Center is the data center that has ready up-to-date copy of all critical applications and databases to the run the business. Some of DR systems has automatic failover functionality or manually bases on management decision during severe situations. Usually DR Data center has average resources in terms of Memory and Processors to reduce cost. DR sites usually have limited Capacity and limited number of days to run on DR, this all depends on Cost.
Business Continuity DR is part of complete strategic plan that is usually prepared by Organizations to sustain the business and make sure all essential functions to run the business are available including ( People , New Offices , Cash , Labor , Systems , Connectivity , PC's , Laptops and Printers ... etc ).
Production data center is a live place of work to conduct day to day business and Business Continuity Disaster Recovery site is a hot site.
Disaster recovery forms part of business continuity. In many cases, many more factors come into play apart from IT in order for a company to keep operating.
Disaster recovery (DR) refers to having the ability to restore the data and applications that run your business should your data center, servers, or other infrastructure get damaged or destroyed. One important DR consideration is how quickly data and applications can be recovered and restored. Business continuity (BC) planning refers to a strategy that lets a business operate with minimal or no downtime or service outage.
The design of both solutions must balance a company’s tolerance for time to restore full function against the budget available to fund protection. In almost all cases, utilizing an externally managed service to accomplish DR or BC will result in lower costs and usually higher performance – less waiting time at a lower cost.
Also, we can say that Disaster recovery is a subset, a small part of overall business continuity. It is the process of saving data with the sole purpose of being able to recover it in the event of a disaster. Disasters in IT range from minor to major: the minor loss of an important set of data to the major loss of an entire data center, though recovery of the corporate database may take the same herculean effort as the reconstruction of the company’s infrastructure.
The production DC located in the work place and it is facilitate daily works, so it is much faster, higher dynamic and it save works on spot. While the recovery DC is located outside the work place & the main objective is to backup information and being a restore point in case of disruption, it may start the backup on spot but usually backup is scheduled after working hours.
I think is business objective dependent.
