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SAP Planning: Best Practices in Implementation by George W. Anderson

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Determining Your Required Level of Disaster Tolerance

After the uptime requirements of each business group are understood, reviewed, rationalized, and finally documented, the SA can begin the task of reviewing these requirements with an eye toward cost. That is, a good SA will not just design a $50 million solution capable of delivering five nines of availability simply because the business told him that’s what they need! Instead, he’ll work with the business and IT to help them understand the costs inherent in such a solution, as he also works toward better understanding high-availability and disaster recovery options that can be implemented up and down the solution stack.

DR and Return on Investment Calculations

Disaster recovery-related TCO ...

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