单选题A customer has a large amount of data stored on three database servers and is concerned that at present there is no disaster recovery plan in place. They have an existing tape backup solution that meets their backup window. In order to analyze potential disaster recovery plans， which of the following questions is the most important？（）AWhat is the minimum critical backup window？BWhich server is handling the most critical data？CHow much data is stored on each server？DWhat is the throughput of the hard drives？
单选题
A customer has a large amount of data stored on three database servers and is concerned that at present there is no disaster recovery plan in place. They have an existing tape backup solution that meets their backup window. In order to analyze potential disaster recovery plans， which of the following questions is the most important？（）
A
What is the minimum critical backup window？
B
Which server is handling the most critical data？
C
How much data is stored on each server？
D
What is the throughput of the hard drives？
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