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What is masking?

This is a Q&A from SAN School Lesson 3.
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What is masking? Is it sort of the reverse of zoning where a port or WWN cannot talk to another specified WWN or port?
Masking is actually " LUN masking," and is used to provide security for LUN access at the storage array level. It is not the reverse of zoning. It is used in conjunction with zoning to provide two levels of security in the SAN.

Chris

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