A customer will be implementing a Hitachi Unified Storage File Module two-node NAS cluster with one SMU. How many power connections are necessary?

The correct answer is C. 5. Option C (5) is correct because a two-node NAS cluster requires 2 power connections per node (dual PSUs for redundancy), giving 4 connections total, plus 1 power connection for the SMU, summing to 5. Why the distractors are wrong: A (3) is far too few - it doesn't account for…

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Options

How the community answered

(60 responses)

A
2% (1)
B
3% (2)
C
87% (52)
D
8% (5)

Explanation

Option C (5) is correct because a two-node NAS cluster requires 2 power connections per node (dual PSUs for redundancy), giving 4 connections total, plus 1 power connection for the SMU, summing to 5.

Why the distractors are wrong:

A (3) is far too few - it doesn't account for the dual PSUs on each node.
B (4) covers only the two nodes (2 × 2 = 4) but forgets the SMU's power requirement entirely.
D (6) overcounts - likely from mistakenly assigning 2 PSUs to the SMU or miscalculating node connections.

Memory tip: Use the formula (nodes × 2) + SMUs → (2 × 2) + 1 = 5. Each node needs redundant power, and the SMU needs just one.

Topics

#File Module#NAS cluster#power connections#SMU sizing

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