Dell PowerEdge R210 II mix memory

Question

I have Dell PowerEdge R210 II server with 4Gb of memory installed (one module). And I also have 8Gb memory module. I replaced 4Gb with 8Gb – server is working ok. But mixing memory in different ways got error "Unsupported memory configuration. DIMM mismatch across slots detected".

Can I install them both to get 12Gb of memory?

P.S. From server documentation: "Memory modules of different sizes can be mixed in sockets 1 to 4 (for example, 2 GB and 4 GB), but all populated channels must have identical configurations."

DELL-Geoff P · Accepted Answer

That would be correct; with a single UDIMM in slot 1. Channel A are slots 1 & 3, Channel B would be 2 & 4. Each channel must match in size and speed.

12GB of RAM is not a supported configuration in this server. 1, 4, 8, 16 and 32 GB are supported only.

Here are the memory specifications:

2Gb DRAM technology
Supports 2 channels per processor
Supports Un-buffered (UDIMM) ECC DDR3 DIMMs
DDR3 speeds of 1333 and 1600 (with Ivy Bridge Processor) supported
Single- and dual-rank UDIMMs (all channels in a system run at the fastest common frequency).
No RDIMM support
Low-voltage(LV) DIMM supported @ 3.5V only
Non-ECC DIMMs are not supported
Support for up to 32GB UDIMM memory (with 4 x 8GB UDIMMs)
No support for quad rank DIMMs
Single DIMM configuration only with DIMM in socket A1

Regards,

DELL-Geoff P · Accepted Answer

It will support 1, 2 or 4 DIMM's; so your suggested configuration won't work.  You can get another 8GB UDIMM  to match the one you have to provide 16gb of RAM, one in each channel.   Regards,

theflash1932 · Answer

So are you getting the unsupported message when putting ONLY the 8GB DIMM in slot 1? If so, what are the exact specs of the memory you are using?

Provided both DIMM's work in slot 1 without error, you can install both for 12GB, but you will likely get a memory warning if you use slots 1 and 2. To use them both with no warning (although slightly less performance), you would use slots 1 and 4.

theflash1932 · Answer

Just to verify ... you want slots 1 and 4 (NOT the first and fourth) ... slot 1 is the second slot and slot 4 is the first slot. If you are getting the message with this configuration, then try clearing the NVRAM using the jumpers on the motherboard. If you just get a message whether they are in 1/4 or 1/2 and plan on ignoring the message, you are better off putting them in 1/2.

Also, make sure the BIOS is up to date.

mescaline · Answer

There are no unsupported message putting only 8 GB DIMM in slot 1. Both DIMM's work in slot 1. Using slots 1 and 4 got the same unsupported message.

theflash1932 · Answer

Ha ... my bad ... assumed it was like many of the latest models with 3 channels laid out as 4,1,2,3 :)

As Geoff said, they should be put in slots 1 and 2 (first and third slots - the ones with white release levers) ... see if you get an unsupported message. If you get a message, put them in slots 1 and 3 (first and second slots - this would ensure that all 'populated channels have identical configurations' - only one channel is populated).

mescaline · Answer

Channels sequence is 2,4,1,3.

Cleared the NVRAM using the jumpers. Unsupported message using slots 1 and 2, 1 and 4, 1 and 3.

Maybe installing 8GB + 4GB + 4GB will solve the problem?

And what about ignoring unsupported message?

mescaline · Answer

Thank you

vince-ameritelinc.com · Answer

Old topic, I know, but to confirm with you, 3x8GB is not supported??

DaniloMarques · Answer

I got mine working with 3 slots of 8gb each.

I get the message when booting that the configuration mismatch but it works. I'm running windows 10 64 bits with the 24 GB.

I'm afraid to buy another 8 GB as it differs in brand from the built-in one and continue to get the message.

But as the tests with 24 GB it should work.

My bios is v 2.10.

PowerEdge Hardware General

Dell PowerEdge R210 II mix memory

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