On which level can Host Group Security be enabled on a Hitachi Unified Storage system?

Question

Options

• Athe FC port level
• Bthe Host Group level
• Cthe iSCSI port level
• Dthe individual LU level

• A
  86% (49)
• B
  2% (1)
• C
  4% (2)
• D
  9% (5)

Explanation

Host Group Security on Hitachi Unified Storage (HUS) systems is enabled at the FC port level (option A). Each Fibre Channel port has a Host Group Security setting that, when turned on, enforces that only WWNs belonging to defined host groups on that port can access mapped LUNs - making the port the enforcement boundary.

Why the distractors are wrong:

• B (Host Group level): Host groups are the objects you configure (adding WWNs, mapping LUNs), but the security feature itself is toggled at the port they belong to, not on the host group itself.
• C (iSCSI port level): Host Group Security is specific to FC infrastructure. iSCSI uses separate access control mechanisms (e.g., CHAP, iSCSI initiator groups).
• D (Individual LU level): LU access is controlled through LUN mapping/masking, which is a different concept - Host Group Security is about port-level enforcement, not per-LU settings.

Memory tip: Think "FC port = front door." Security is enabled at the entry point (the FC port), and everything behind that door (host groups, LUNs) is only reachable once the port enforces who's allowed in.

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