Single Rank DIMMs PowerEdge 2850

Question

I have several PE2850s with 4GB of RAM each, in 2 2GB DIMMs.  I want to upgrade them all to 16MB, so I bought 2 more 2GB and 2 4GB DIMMs for each.  Bought them from Dell. Tried to install them last night and got nowhere.  First, tried to put the 4GB pairs in DIMM1_A and DIMM1_B, then 2GB pairs in DIMM2A&B and DIMM3A&B, and got this BIOS message: ----- RV100-M BIOSError: Incorrect memory configurationMemory slots DIMM3_A and DIMM3_B only support single rank DIMMs.  Remove the dual rank DIMMs from slots DIMM3_A and DIMM3_B.For more information on valid memory configurations, please see the system documentation on support.dell.comSystem halted! ----- Then, put the 4GB pairs in DIMM3, and 2GB pairs in DIMM1 and DIMM2, and got the same message.  I realize that maybe I should have tried the 4GB pairs in DIMM2 just to be thorough, but I gave up and went home at that point.  Anyone seen this?  Any chance it's a BIOS issue?  Could Dell have really sold me the wrong DIMMs?

M_6 · Answer

bhamill,

This system only supports 4 dual ranked Dimms - and if you do put 4 of these dimms into slots 1A/B and 2A/B then you cannot populate slots 3A/B.

Slots 3A/B will not accept dual rank dimms.

You can have 2 dual ranked dimms and 4 single rank dimms.

M@l

PowerEdge Hardware General

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