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What feature, new to Windows Server 2012, provides the ability to find identical sets of data on a SAN-based storage array and reduces duplicate sets down to a single instance in order to reduce space?

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Answer:

Data De-duplication

Step-by-step explanation:

Data De-duplication is a feature that can help reduce the impact of redundant data on storage costs.

When enabled, Data De-duplication optimizes free space on a volume by examining the data on the volume by looking for duplicated portions on the volume. Duplicated portions of the volume's data set are stored once and are (optionally) compressed for additional savings.

Data De-duplication optimizes redundancies without compromising data fidelity or integrity.

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