Explain the concepts of LUN management, zoning, and LUN masking in a Fibre Channel SAN environment. Why are these access controls necessary, and how do they work together to secure storage access?

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LUN management, zoning, and LUN masking are three layers of access control in a Fibre Channel SAN environment. Each layer operates at a different level of the SAN architecture, and together they ensure that servers can only access the storage volumes they are authorized to use.