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SK0-003 · Question #247

A datacenter has exceeded the load on the central uninterruptible power supply (UPS) for the room and is causing power load problems. Additional power is available, but not using the central UPS…

The correct answer is C. Add stand alone UPSs for new servers not wired off the central UPS. When a central UPS is overloaded and additional non-UPS power is available, the best temporary solution for new servers is to deploy standalone UPS units, providing localized power protection without further burdening the central system.

Server hardware installation and management

Question

A datacenter has exceeded the load on the central uninterruptible power supply (UPS) for the room and is causing power load problems. Additional power is available, but not using the central UPS. Which of the following is the BEST temporary solution for adding new servers until an upgrade of the central UPS can occur?

Options

  • AContinue plugging into the central UPS, but put the UPS on bypass to avoid load problems.
  • BPlug the servers directly into the power that is not on the UPS.
  • CAdd stand alone UPSs for new servers not wired off the central UPS.
  • DContinue plugging into the central UPS because the actual load supported is actually higher

How the community answered

(53 responses)
  • A
    19% (10)
  • B
    9% (5)
  • C
    68% (36)
  • D
    4% (2)

Why each option

When a central UPS is overloaded and additional non-UPS power is available, the best temporary solution for new servers is to deploy standalone UPS units, providing localized power protection without further burdening the central system.

AContinue plugging into the central UPS, but put the UPS on bypass to avoid load problems.

Putting the central UPS on bypass would remove all power protection for all connected servers, making them vulnerable to outages and defeating the purpose of a UPS.

BPlug the servers directly into the power that is not on the UPS.

Plugging servers directly into un-UPS-protected power exposes them to potential downtime during power fluctuations or outages, which is generally unacceptable for critical datacenter equipment.

CAdd stand alone UPSs for new servers not wired off the central UPS.Correct

Adding standalone UPS units for new servers allows them to leverage the available power supply while still providing critical power protection against outages and fluctuations. This solution prevents exceeding the existing central UPS's capacity while maintaining server uptime for the newly added equipment.

DContinue plugging into the central UPS because the actual load supported is actually higher

Continuing to plug into an already overloaded central UPS will exacerbate the power load problems, potentially leading to immediate failure of the UPS or power delivery issues for all connected equipment.

Concept tested: Datacenter power management - UPS overload

Topics

#datacenter power#UPS#power management#temporary solutions

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