D-PE-OE-23 · Question #31
SIMULATION A customer wants to change the PSU configuration to a 2+0 with PSU2 as the primary. Use the simulator to complete this task in the iDRAC UI. Answer: To change the Power Supply Unit (PSU)…
The correct answer is C. Under voltage fault detected on power supply 2. Option C is correct because in a 2+0 configuration with PSU2 designated as the primary, PSU2 carries the active power load, making it the unit the iDRAC monitors and reports faults against. An under voltage fault on the primary PSU (PSU2) is precisely the type of event the…
Question
SIMULATION A customer wants to change the PSU configuration to a 2+0 with PSU2 as the primary. Use the simulator to complete this task in the iDRAC UI. Answer:
To change the Power Supply Unit (PSU) configuration to a 2+0 setup with PSU2 as the primary in the iDRAC interface, follow these steps:
Navigate to Power Management Settings:
In the iDRAC interface, go to the Configuration tab at the top. Select Power Management from the dropdown options. Locate the Power Configuration Section:
Within the Power Management settings, look for a section labeled Power Configuration or Power Supply Configuration. Select the Redundancy Policy:
Change the Redundancy Policy to 2+0. In this configuration, there will be no redundancy, and both power supplies will be active but configured as independent power sources without failover. Set PSU2 as the Primary PSU:
Locate the option to designate the Primary PSU. Select PSU2 as the primary power source. This setting ensures that PSU2 will handle the primary power load under normal conditions. Apply and Save Changes:
Once you have made these changes, click Apply or Save to confirm the new configuration. The interface may prompt for confirmation, after which the settings will be saved, and PSU2 will become the primary power supply under a 2+0 configuration. Verify Configuration:
Review the updated settings to confirm that PSU2 is now set as primary and that the redundancy policy is 2+0, meaning only PSU2 is actively providing power without a secondary backup. By following these steps in the iDRAC simulator, you will set up PSU2 as the primary power source with no redundancy, ensuring a 2+0 configuration. This setup will leverage PSU2 exclusively without automatic failover to another power supply.
Options
- AUnder voltage fault detection on power supply 1.
- BPower supply 2 has failed.
- CUnder voltage fault detected on power supply 2.
- DPower supply 1 has failed.
How the community answered
(27 responses)- A4% (1)
- B7% (2)
- C78% (21)
- D11% (3)
Explanation
Option C is correct because in a 2+0 configuration with PSU2 designated as the primary, PSU2 carries the active power load, making it the unit the iDRAC monitors and reports faults against. An under voltage fault on the primary PSU (PSU2) is precisely the type of event the system would flag, as it directly impacts the active power source for the server.
Why the distractors are wrong:
- A is wrong because PSU1 is not the primary in this configuration - fault detection on PSU1 would not be the expected iDRAC alert when PSU2 is primary.
- B is wrong because a full "failure" event is a more severe/different condition than an under voltage fault; the scenario describes a fault detection, not a complete PSU failure.
- D is wrong for the same reason as A - PSU1 is the non-primary unit, so a failure report on PSU1 does not align with monitoring behavior focused on PSU2 as the primary.
Memory tip: Use the phrase "Primary PSU = Primary fault target." Whichever PSU is set as primary in iDRAC carries the load and is the unit whose under voltage faults will be surfaced in alerts. If PSU2 is primary → faults report on PSU2.
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