CAS-001 · Question #256
A storage administrator would like to make storage available to some hosts and unavailable to other hosts. Which of the following would be used?
The correct answer is A. LUN masking. LUN masking is a storage-level access control mechanism that restricts which hosts (identified by their World Wide Name or iSCSI Qualified Name) can see and access specific LUNs (Logical Unit Numbers) on a storage array. It effectively hides LUNs from unauthorized hosts while…
Question
A storage administrator would like to make storage available to some hosts and unavailable to other hosts. Which of the following would be used?
Options
- ALUN masking
- BDeduplication
- CMultipathing
- DSnapshots
How the community answered
(34 responses)- A91% (31)
- B3% (1)
- C6% (2)
Explanation
LUN masking is a storage-level access control mechanism that restricts which hosts (identified by their World Wide Name or iSCSI Qualified Name) can see and access specific LUNs (Logical Unit Numbers) on a storage array. It effectively hides LUNs from unauthorized hosts while making them visible to authorized ones - directly solving the stated requirement. Deduplication (B) is a data reduction technique that eliminates duplicate blocks to save space - it has nothing to do with access control. Multipathing (C) configures multiple physical paths between a host and storage for redundancy and performance, not for restricting access. Snapshots (D) are point-in-time copies used for backup and recovery, not access control. Note: LUN masking is often used alongside zoning (fabric-level) for a defense-in-depth approach to SAN security.
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