What is LUN masking in storage systems?

Prepare for the HCIA Storage Exam with our comprehensive quiz featuring flashcards and multiple-choice questions. Each question comes with hints and detailed explanations. Ace your exam with confidence!

Multiple Choice

What is LUN masking in storage systems?

LUN masking is the practice of hiding specific LUNs from certain hosts in a SAN so only authorized initiator IDs can see and access those LUNs. By configuring a mask on the storage array (and often using fabric zoning), you bind particular hosts to a subset of LUNs, ensuring others don’t even detect those LUNs. This improves security and simplifies management by keeping each host’s view of storage limited to what it’s allowed to access. Remember, masking controls visibility; once a LUN is visible, other access controls and multipathing determine actual use. It’s not about encrypting data, concealing capacity, or mapping LUNs across clusters.

LUN masking is the practice of hiding specific LUNs from certain hosts in a SAN so only authorized initiator IDs can see and access those LUNs. By configuring a mask on the storage array (and often using fabric zoning), you bind particular hosts to a subset of LUNs, ensuring others don’t even detect those LUNs. This improves security and simplifies management by keeping each host’s view of storage limited to what it’s allowed to access. Remember, masking controls visibility; once a LUN is visible, other access controls and multipathing determine actual use. It’s not about encrypting data, concealing capacity, or mapping LUNs across clusters.

More practice questions