HQT-4180 · Question #56
A VSP Е1090 customer wants to add another rack with Drive Boxes, however the new rack cannot be installed side-by-side with the controller rack. You plan to order SAS optical cables to connect the…
The correct answer is B. 10m C. 30m D. 50m. For the Hitachi VSP E1090, SAS optical cables - used when racks cannot be placed side-by-side - are available in 10m, 30m, and 50m lengths (options B, C, D). These three lengths cover the practical range of inter-rack distances in typical data center deployments, from short…
Question
A VSP Е1090 customer wants to add another rack with Drive Boxes, however the new rack cannot be installed side-by-side with the controller rack. You plan to order SAS optical cables to connect the two racks together. Which three cables lengths are available (in meters)? (Choose three.)
Options
- A5m
- B10m
- C30m
- D50m
- E100m
How the community answered
(28 responses)- A4% (1)
- B93% (26)
- E4% (1)
Explanation
For the Hitachi VSP E1090, SAS optical cables - used when racks cannot be placed side-by-side - are available in 10m, 30m, and 50m lengths (options B, C, D). These three lengths cover the practical range of inter-rack distances in typical data center deployments, from short cross-row runs to longer across-room installations.
Why the distractors are wrong:
- A (5m): This length is not offered for SAS optical cables on the E1090; it would typically fall in the range of standard copper SAS cables used for short, within-rack connections.
- E (100m): 100m exceeds the supported maximum distance for SAS optical connectivity on this platform, making it an unsupported and unavailable option.
Memory tip: Think "10-30-50" as a counting pattern - multiply 10 by 1, 3, and 5. The extremes (5m and 100m) are the traps: 5m is too short to be "optical" territory, and 100m is beyond what SAS optical supports on this system.
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