What are two characteristics of the Hitachi Unified Storage (HUS) controllers? (Choose two.)

Question

Options

• AMixing FC and iSCSI front-end ports is allowed on all models.
• BThe FC front-end ports automatically sense 1, 2, 4 and 8 Gbps.
• CThe FC front-end ports offer improved sequential I/O performance.
• DHUS models 110 and 130 are active/passive.

Explanation

B and D are the correct answers.

Option B is correct because HUS FC front-end ports support auto-sensing across all standard Fibre Channel speeds - 1, 2, 4, and 8 Gbps - allowing flexible connectivity without manual configuration. Option D is correct because the HUS 110 and 130 are lower-tier models that use an active/passive controller architecture, meaning only one controller actively processes I/O at a time, unlike the HUS 150 which uses active/active.

Option A is wrong because mixing FC and iSCSI front-end ports is not permitted on all HUS models - this capability is model-dependent and not a universal characteristic. Option C is a distractor; FC ports are generally associated with low-latency random I/O, and "improved sequential I/O performance" is not a defining characteristic specific to HUS FC front-end ports.

Memory tip: Think "higher model = higher availability" - HUS 150 is active/active (5 > 3, better), while 110 and 130 are active/passive (lower tier, one controller rests). For speeds, remember FC auto-sensing covers the standard generational speeds: 1→2→4→8 Gbps.

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