Which of the following allows you to provide security to the data contained in a storage array?
A. Trunking
B. LUN masking
C. LUN provisioning
D. Multipathing
Answer: B
Logical Unit Number Masking or LUN masking is an authorization process that makes a Logical Unit Number available to some hosts and unavailable to other hosts.
LUN masking is executed at the storage controller level instead of at the switch level. By providing LUN-level access control at the storage controller, the controller itself enforces access policies to the devices. LUN masking provides more detailed security than zoning because LUNs allow for sharing storage at the port level.
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