ThinkServer RD350 mixing RAM

[Mycobacterium]

Hi, i have 2x one sided (G.SKILL 8GB 2400MHz Value 4 CL15 ECC F4-2400C15S-8GNS)  

https://www.x-kom.pl/p/340074-pamiec-ram-ddr4-gskill-8gb-2400mhz-value-4-cl15.html

 

and 1x dual sided original lenovo 8GB Dual Ranked, ECC R RAM

https://www.amazon.com/Hynix-HMA41GR7AFR4N-UH-DDR4-2400-Server-Memory/dp/B01BCUS4CW

 

Can I mix it each other? 

 

 

And BIOS reported 8GB disabled

 

[NelizMastr]

You’ll need to install pairs. Servers don’t like mix and match. 

[Mycobacterium]

 

NelizMastr thanks, wht do you mean by "pairs" ?

 

I need second double sided RAM or I can instal it with another one sided RAM ?

 

I try  with SINGLE RANK ECC REGISTERED CL15 DDR4 SDRAM 288-PIN RDIMM MEMORY MODULE

Model: HMA41GR7AFR4N-TF

[AbsoluteFool]

On 10/19/2018 at 10:25 PM, Performace said:

 

NelizMastr thanks, wht do you mean by "pairs" ?

 

I need second double sided RAM or I can instal it with another one sided RAM ?

 

I try  with SINGLE RANK ECC REGISTERED CL15 DDR4 SDRAM 288-PIN RDIMM MEMORY MODULE

Model: HMA41GR7AFR4N-TF

Servers work in matched pairs, so meaning dim 1 and dim 2 must be identical. In a dual dim line up like dim1 A and dim2 A you could put one matched pair then dim1 B and dim2 B you could set another pair that is not alike din1A and dim2 A

[Mycobacterium]

I try to put it in that order

OneSidedRAM 2x 8GB (DIMMA1 - DIMMA2)

TwoSidedRAM 2x 8GB (DIMMB1 - DIMMB2)

 

But server freeze on memory initialization.

 

I try in other order:

 

OneSidedRAM 2x 8GB (DIMMA1 - DIMMB1)

TwoSidedRAM 2x 8GB (DIMMD2 - DIMMC2)

 

But server see ony 16GB of RAM and 2 other OneSidedRAM's are (disabled) in BIOS 

 

[Jarsky]

Firstly, you are mixing ECC with non ECC memory. This will not work. You either go ECC, ECC Reg, or Non-ECC....no mixture of the 3. 

Secondly with ECC memory it can come in single ranked (1R) or dual ranked (2R). Mixing ranks may cause adverse affects and compatibility issues. 

 

You should always stick with a single type of RAM in server applications. 

 

[Mycobacterium]

I will look for the appropriate modules, thanks.