For centralized backup systemarchitecture design, 3-2-1 rule should be recommended, what is the details of 3-2-1? For centralized backup system architecture, it is recommended to adopt the 3-2-1 principle. What is the 3-2-1 principle?

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A. 3 data copies, 2 sites, 1 backup storage medium

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B. 3 backup storage media, 2 data copies, 1 copy in an off-site location

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C. 3 data copies are stored in 2 different backup storage media, of which 1 copy is in an off-site

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D. 3 sites, 2 data copies, 1 backup storage medium

For centralized backup systemarchitecture design, 3-2-1 rule should be recommended, what is the details of 3-2-1? For centralized backup system architecture, it is recommended to adopt the 3-2-1…

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