R6515 A/B power not working

Hello David,

Can you post image of the selections you used?

Try selecting the other PSU, than you have selected now, for the Primary PSU.

Try give the DRAC a reboot and check results again.

Check you are at the latest iDRAC and BIOS firmware:

https://dell.to/45CrrVL

Hello David,

There is work going on on the forum so that may have been what caused you not to see the reply.

Are the PSU identical with identical firmware?

Are the PSU LED lit?

Below is documentation on power supply redundancy if you could take a look.

One thing I wonder is did the PSU complete discovery?

The iDRAC GUI online help  information:

Redundancy  Policy

*Not Redundant—If a PSU fails, the system may shut down

*A/B Grid Redundant—power supplies are divided into Grid A and Grid 8.

If a grid or a PSU on one grid fails, but the PSUs on the second grid are

Functional, the system does not shut down. Grid redundancy depends on

the system configuration.

*PSU Redundant—If any one of the PSUs fails, the system does not shut

down. PSU redundancy depends on the system configuration

When PSU redundancy is used, the PSUs are not divided into

grids Each PSU is considered as an individual contributor

Hot spare is a Power-Supply Unit (PSU) feature that configures

redundant PSUs to turn off depending on the server load.

This allows the remaining PSUs to operate at a higher load and efficiency.

Other documentation:

R6515 Installation and Service Manual : Power Supplies page 90-93

https://dell.to/3OLzJ6X

CAUTION: When connecting the power cable to the PSU, secure the cable to the PSU with the strap.

NOTE: When installing, hot swapping, or hot adding a new PSU, wait for 15 seconds for the system to recognize the

PSU and determine its status. The PSU redundancy may not occur until discovery is complete. The PSU status indicator

turns green to indicate that the PSU is functioning properly.

NOTE: For certain premium configurations with high power consumption, system PSU might stay with 2+0 mode only, 1+1

redundant mode is not available.

NOTE: While replacing the hot swappable PSU, after next server boot; the new PSU automatically updates to the same

firmware and configuration of the replaced one. For more information about the Part replacement configuration, see the

Lifecycle Controller User's Guide at https://dell.to/3qLzZe8

NOTE: Ensure to install the latest iDRAC 4.4x version or any later versions to support the 700 W PSU.

The default PSU settings are as follows:

● If the load on the active PSU is more than 50 percent of PSU rated power wattage, then the redundant PSU is switched to

the active state.

● If the load on the active PSU falls below 20 percent of PSU rated power wattage, then the redundant PSU is switched to

the sleep state.

Configuring power supply options  Page 205-206

https://dell.to/45AigoU

You can configure the power supply options such as redundancy policy, hot spare, and power factor correction.

NOTE: Hot spare and Power factor correction features may not be available on some of the platforms/releases.

Hot spare is a power supply feature that configures redundant Power Supply Units (PSUs) to turn off depending on the server

load. This allows the remaining PSUs to operate at a higher load and efficiency. This requires PSUs that support this feature, so

that it quickly powers ON when needed.

In a two PSU system, either PSU1 or PSU2 can be configured as the primary PSU.

After Hot Spare is enabled, PSUs can become active or go to sleep based on load. If Hot Spare is enabled, asymmetric electrical

current sharing between the two PSUs is enabled. One PSU is awake and provides the majority of the current; the other PSU is

in sleep mode and provides a small amount of the current. This is often called 1 + 0 with two PSUs and hot spare enabled. If all

PSU-1s are on Circuit-A and all PSU-2s are on Circuit-B, then with hot spare enabled (default hot spare factory configuration),

Circuit-B has much less load and triggers the warnings. If hot spare is disabled, the electrical current sharing is 50-50 between

the two PSUs, the Circuit-A and Circuit-B normally has the same load.

Power factor is the ratio of real power consumed to the apparent power. When power factor correction is enabled, the server

consumes a small amount of power when the host is OFF. By default, power factor correction is enabled when the server is

shipped from the factory.

Hello have you tried clearing the event logs? and cold boot as well?

Hello David,

There is work going on the forum so that may have been what caused you not to see the reply.

Are the PSU identical with identical firmware?

Are the PSU LED lit?

Is the system still on original hardware?  Has anything been added or removed?

Try updating the PSU firmware:

PSU - Part #:6V43G  (firm. 00.0C.7D) - update to Version: (00.0C.80)

https://dell.to/3RgZX4n

It will require a maintenance window

Please view the Important Information at the bottom of the firmware page.

Basically do not try turning it on or off or anything until firmware update completes.

When the Power Supply Units (PSU) are updated, the server appears to be powered off. DO NOT try to power it on, as this might end in a fault of the units. The server will power on again on its own, when the update is completed (after 5-15 minutes).

Could we go back to 512GB from 1TB?

Or one more thing I could think of is that you go back to the original setting if you have added any hardware since the purchase.

Respectfully,

Hello,

can you try to update BIOS to 2.13.3 version?

Dell Server PowerEdge BIOS R6515/R7515 Version 2.13.3 | Driver Details | Dell US

And please update iDRAC as well

iDRAC 7.00.30.00 | Driver Details | Dell US

And what are the part number of the PSU?

Because there are some firmware update for PSU too.

Hello the troubleshooting provided so far is a textbook steps, if this doesn't fix the issue, kindly raise an official ticket to dig even further: https://dell.to/3sRFDg3
Respectfully,