You have 4x memory risers named A, B, C, D. Every riser is capable to hold up to 8x DIMMs (ie. A1, A2, ... A8) That makes a total of 32x DIMMs in your system. In other words your system is full.
If you swap DIMM A1 you'll have to swap B1, C1 and D1 as well. For optimum configuration you shouldn't mix DIMMs of different sizes. So one solution might be, to remove all 2GB DIMMs, fill up first 4x slots of every with 8GB DIMMs. That'll leave you spare slot to expand further in future. Or you just replace all your 2GB DIMMs with 4GB DIMMs. Jens -----Original Message----- From: Nick Lunt [mailto:[email protected]] Sent: 25 March 2010 09:37 To: Heinz, Jens Cc: linux-poweredge-Lists Subject: RE: R900 RAM Configuration > -----Original Message----- > From: [email protected] [mailto:[email protected]] > Sent: 24 March 2010 15:19 > To: Nick Lunt > Subject: RE: R900 RAM Configuration > > This link might help > > http://support.dell.com/support/edocs/systems/per900/en/hom/_sectioc.ht > m > #wp1082885 > > Jens > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Nick Lunt > Sent: 24 March 2010 16:09 > To: linux-poweredge-Lists; linux-poweredge-Lists > Subject: R900 RAM Configuration > > Hi > > we have an R900 with 32 x 2GB DIMMs in, so the server has no free DIMM > slots. > All the DIMMs are DDR2 FB-DIMM-SYNCHRONOUS . > > We need to increase the RAM from 64GB to a minimum of 103GB (based on > our calculations), so really I guess we'd be looking at increasing the > RAM to 104GB, or just going for a nice round 128GB :) > > Can anyone recommend the best upgrade method for this ? > Do we need to keep RAM in banks all the same size ? > How many DIMMs are in each bank ? > > Basically is there anything we need to be aware of when removing some > DIMMs and adding larger ones ? Right, that doc says 4 risers must be installed at all times. Seen as we have 32 DIMMs does that mean we have 8 risers ? I.e. A1,B1,C1,D1 is a full riser. A1,B2,C2,D2 is another riser, etc ? Status: OK DIMM A1 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM B1 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM C1 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM D1 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM A2 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM B2 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM C2 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM D2 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM A3 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM B3 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM C3 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM D3 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM A4 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM B4 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM C4 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM D4 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM A5 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM B5 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM C5 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM D5 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM A6 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM B6 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM C6 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM D6 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM A7 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM B7 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM C7 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM D7 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM A8 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM B8 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM C8 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB Status: OK DIMM D8 DDR2 FB-DIMM-SYNCHRONOUS 2048 MB So if I changed A1 to a 4GB DIMM then I should change A2, A3, A4, A5, A6, A7 and A8 to 4GB DIMMs too ? Thanks Nick. __________ Information from ESET NOD32 Antivirus, version of virus signature database 4972 (20100324) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
