A customer has a VSP E1090 with four attached NVMe drive boxes (DBNs). How many back-end cables are used?

The correct answer is B. 16. Option B (16) is correct because each NVMe drive box (DBN) attached to the VSP E1090 requires 4 back-end cables for redundant connectivity, so 4 DBNs × 4 cables = 16 cables total. A (8) is wrong - this would imply only 2 cables per DBN, which is insufficient for the dual-path…

Hardware Installation and Cabling for VSP Midrange

Question

Options

How the community answered

(34 responses)

A
3% (1)
B
71% (24)
C
18% (6)
D
9% (3)

Explanation

Option B (16) is correct because each NVMe drive box (DBN) attached to the VSP E1090 requires 4 back-end cables for redundant connectivity, so 4 DBNs × 4 cables = 16 cables total.

A (8) is wrong - this would imply only 2 cables per DBN, which is insufficient for the dual-path redundancy the E1090 architecture requires.
C (24) is wrong - 6 cables per DBN has no basis in the E1090's back-end design spec.
D (32) is wrong - 8 cables per DBN would describe a larger or differently architected system; the E1090 uses 4 per DBN, not 8.

Memory tip: Think "4×4 = 16" - the VSP E1090 uses 4 cables per DBN, and the question gives you 4 DBNs, making the multiplication straightforward on exam day.

Topics

#NVMe drive boxes#back-end cabling#DBN#cable count calculation

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