PE R810 Memory Configuration Not Optimal

Hello.

Without FlexMem Bridges, CPU 1 has access to only DIMMs A1:A8 and CPU 2 to DIMMs B1:B8. Since all the servers are reporting 256 GB with 32 GB: A1, A2, B1, B2, C1, C2, D1, D2 configuration, it looks like you have FlexMem Bridges installed on them; confirm.

For optimal memory configuration you should also have matched DIMMs on A3/A4, B3/B4, C3/C4 and D3/D4 for corresponding processors. Therefore, you will need additional 8x 32GB DIMMs to achieve optimal memory configuration. Are servers with 32 GB: A1, A2, A3, A4, B1, B2, B3, B4 also reporting same error?

See pages 100 -101 of the Owners' manual: http://downloads.dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_poweredge/poweredge-r810_owner%27s%20manual_en-us.pdf

Thanks Robert. How do I confirm that the FlexMem Bridges are installed? I checked the system original configuration and I did not see FlexMem Bridges as a line item. I just see:

317-3293: No 3rd/4th Processor

and

330-7637: PE R810 Heatsink Blanks for 2 Processors

Based on that I'm guessing the FlexMems were not ordered initially. Not sure if they were installed post-market. Data Center is a ways away, do I need to go pop open the chassis to verify? Or does the fact that RAM is recognized in C/D channels confirm the presence of the bridges?

And yes, all servers are showing the same errors. Whether it's A1/A2/A3/A4/B1/B2/B3/B4 or A1/A2/B1/B2/C1/C2/D1/D2, same error. But all 256GB is seen on all nodes.

Thanks Robert. How do I confirm that the FlexMem Bridges are installed? I checked the system original configuration and I did not see FlexMem Bridges as a line item.

You can remotely review the processors installed in System Inventory under System on the iDRAC web interface

Data Center is a ways away, do I need to go pop open the chassis to verify? Or does the fact that RAM is recognized in C/D channels confirm the presence of the bridges?

While onsite, yes you can open the chassis. For Processors 1&2, channels C&D are only accessible through the use of the FlexMem Bridges.

And yes, all servers are showing the same errors. Whether it's A1/A2/A3/A4/B1/B2/B3/B4 or A1/A2/B1/B2/C1/C2/D1/D2, same error. But all 256GB is seen on all nodes.

Is the 256 GB of memory visible from within or outside of the operating system? Reply with a DSET report to the e-mail I am going send. The report with provide us with a clear view of the memory, processors and populated channels.

The DSET report confirms that you have all the 256 GB of memory installed available to the operating system. No indication of FlexMem Bridges but based on the memory slots populated and available memory, they should be installed as well. Your current configuration is not factory supported. As earlier advised, you will need additional 8x 32 GB DIMMs for optimal configuration. See below a list of factory supported configurations with optimal memory. Otherwise, you may choose to disable the F1 prompt on boot at the very bottom of the BIOS setup screen.

Consider also applying the following updates:

iDRAC: http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=J7YYK

LifeCycle Controller: http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=0WFGM

OMSA 8.3: http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=TK61C

Keep us in the loop on any progress.

Hi Team,

Does this issue resolved? If yes then please let me know what configuration you are using.

Does R810 supports 16 GB DIMM's with 12800R ?

Regards,

Rahul

I'm getting the same error "Memory Configuration Not Optimal" and requires to press F1 to continue. And I'm no longer able to reboot remotely. Can you please help?

Here are my memory configuration on my R810 server:

Hello,
What is the processor configuration of the host? In order to check the configuration, we'd need to know the number of processors and FlexMem bridges, because memory population is dictated by that. Also, what BIOS revision is the server running?