Exam4Training

When installed, the EMC Data Domain cleaning schedule will be left at the default settings. Assuming that the first backup is taken on a Monday, what is the minimum disk requirement for the Data Domain system?

The following facts have been gathered about an EMC Data Domain implementation:

– Retention policy is 28 days

– Backups start at 6 P.M. and finish by 4 A.M.

– Backup schedule is full on Monday; incremental every other day

– First full backup size = 150 TB

– Reduction rate on first full backup = 5x

– Subsequent reduction rate on full backups = 15x

– Daily change rate = 10%

– Incremental reduction rate = 25x

When installed, the EMC Data Domain cleaning schedule will be left at the default settings. Assuming that the first backup is taken on a Monday, what is the minimum disk requirement for the Data Domain system?

A. 67.2 TB

B. 63 TB

C. 74.4 TB

D. 78 TB

Answer: C

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