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SK0-004 · Question #750

A server technician has installed a full rack in a server room and must place the following items in the rack: - One 2U server - One 2U firewall - One 1U server - Two 3U UPS devices Which of the…

The correct answer is D. Place both 3U UPS devices on the bottom of the rack. UPS devices must be placed at the bottom of the rack because their battery arrays make them the heaviest components, and bottom placement keeps the center of gravity low for stability.

Server hardware installation and management

Question

A server technician has installed a full rack in a server room and must place the following items in the rack:

  • One 2U server
  • One 2U firewall
  • One 1U server
  • Two 3U UPS devices

Which of the following describes how the technician should arrange the rack?

Options

  • APlace one 3U UPS device on the top of the rack and one on the bottom
  • BPlace both 3U UPS devices on the top of the rack
  • CPlace both 3U UPS devices in the center of the rack
  • DPlace both 3U UPS devices on the bottom of the rack

How the community answered

(34 responses)
  • A
    3% (1)
  • B
    9% (3)
  • C
    3% (1)
  • D
    85% (29)

Why each option

UPS devices must be placed at the bottom of the rack because their battery arrays make them the heaviest components, and bottom placement keeps the center of gravity low for stability.

APlace one 3U UPS device on the top of the rack and one on the bottom

Placing one UPS on top raises the center of gravity significantly, creating a tip hazard and violating standard rack weight distribution guidelines.

BPlace both 3U UPS devices on the top of the rack

Placing both UPS devices at the top concentrates the heaviest load at the highest point, maximizing instability and tip risk.

CPlace both 3U UPS devices in the center of the rack

Placing heavy UPS devices in the center is better than the top but still unnecessarily raises the center of gravity and is not the recommended best practice.

DPlace both 3U UPS devices on the bottom of the rackCorrect

UPS units contain large lead-acid or lithium battery banks that make them far heavier than servers or firewalls in the same rack. Standard rack installation practice requires the heaviest equipment to be mounted at the bottom to lower the center of gravity, prevent the rack from becoming top-heavy, and eliminate the risk of the rack tipping over and causing equipment damage or injury.

Concept tested: Rack equipment weight distribution and UPS placement

Topics

#rack layout#UPS placement#weight distribution#rack design

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