How many batteries does a VSP E1090 have per controller (CTL)?

The correct answer is B. 2. Each controller (CTL) in the VSP E1090 is equipped with 2 batteries, providing redundant power backup to protect cached data during unexpected power loss - one battery alone (A) would be a single point of failure, making it insufficient for an enterprise-grade controller. Three…

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How the community answered

(37 responses)

A
5% (2)
B
81% (30)
C
3% (1)
D
11% (4)

Explanation

Each controller (CTL) in the VSP E1090 is equipped with 2 batteries, providing redundant power backup to protect cached data during unexpected power loss - one battery alone (A) would be a single point of failure, making it insufficient for an enterprise-grade controller. Three (C) or four (D) batteries would exceed the actual hardware design and are not part of the E1090's CTL specification.

Memory tip: Think "CTL = Couple" - each controller comes in a pair of batteries, just as controllers themselves are typically deployed in pairs for redundancy.

Topics

#VSP E1090#battery#controller hardware#hardware specs

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