R900 RAM Configuration

Nick Lunt nick.lunt at patech-solutions.com
Thu Mar 25 03:36:46 CDT 2010


> -----Original Message-----
> From: Jens_Heinz at Dell.com [mailto:Jens_Heinz at Dell.com]
> 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: linux-poweredge-bounces at dell.com
> [mailto:linux-poweredge-bounces at dell.com] 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.

 

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