@Dino
Looking at the Specs i dont believe 48GB is possible on a single Node at all. It suggests 36GB Max. So 6x4GB sticks
Looking at its DIMM population configurations your probably better off with 24GB per node max. Its a crazy idea having only half the RAM slots on the second CPU
RAM is Tri-Channel
CPU0 has 6 RAM slots
CPU1 has 3 RAM slots
Looks like it came with 2GB sticks. So you can play around a bit trying different configurations up to 12GB per CPU or 18GB total and see what difference it makes populating the last 3.
The configuration on your current nodes of 2 sticks per CPU does not match the Dell recommendation either. Everything is probably running in single channel mode as currently setup.
I have 2 different C6100 myself now (and a spare node).
My first purchase was a 12x3.5" chassis with L5520's. It was a bog standard C6100 not a DCS and had been refurbished by Dell (and had the stickers to prove it) and the quality of the refurbishment was amazing. Looked brand new. My only gripe it has the older model fan controller and isnt as quiet as one would like. But it still works well. I have upgraded it a fair bit.
My latest addition is a 24x2.5" chassis with E5540's. Its a DCS (i found out after purchase) but built to the same spec as a standard C6100 and even happily took the same BIOS (thankfully). It was refurbished but not by Dell. The BIOS and BMC was horribly outdated. It definitely showed it had been used. It was clean but not detail clean if you understand my meaning. After much stuffing around i got everything working.
I have since brought all my nodes up to the latest BIOS and BMC as of a couple of weeks ago when some of the nodes got L5639's. I would hesitate to try the same with any DCS node your not willing to brick. Permanently.
One option i could see is that if the connections for power supply etc are standard maybe you could buy some spare barebones nodes from the USA (they are reasonably cheap but shipping hurts) for any node you want to run more RAM etc on and swap out the motherboards.
Heres a replacement motherboard from the USA. Check its for the tys and not the older 5400 series CPU's. Maybe someone can confirm? It appears to be the same i brought but mine were for $85 US each and were trays pulled from a server with heatsinks etc rather than new refurbs
NEW Genuine Dell Poweredge C6100 XS23 Node Motherboard Full Assembly D61XP | eBay
Swap your current CPU's, heatsinks etc over and you get 12 RAM slots and support for newer CPUs and 16GB RAM per stick rather than 36GB a Node.
Depends on what you plan to do with it if you can get away with the lesser setup.
Looking at the Specs i dont believe 48GB is possible on a single Node at all. It suggests 36GB Max. So 6x4GB sticks
Looking at its DIMM population configurations your probably better off with 24GB per node max. Its a crazy idea having only half the RAM slots on the second CPU
RAM is Tri-Channel
CPU0 has 6 RAM slots
CPU1 has 3 RAM slots
Looks like it came with 2GB sticks. So you can play around a bit trying different configurations up to 12GB per CPU or 18GB total and see what difference it makes populating the last 3.
The configuration on your current nodes of 2 sticks per CPU does not match the Dell recommendation either. Everything is probably running in single channel mode as currently setup.
I have 2 different C6100 myself now (and a spare node).
My first purchase was a 12x3.5" chassis with L5520's. It was a bog standard C6100 not a DCS and had been refurbished by Dell (and had the stickers to prove it) and the quality of the refurbishment was amazing. Looked brand new. My only gripe it has the older model fan controller and isnt as quiet as one would like. But it still works well. I have upgraded it a fair bit.
My latest addition is a 24x2.5" chassis with E5540's. Its a DCS (i found out after purchase) but built to the same spec as a standard C6100 and even happily took the same BIOS (thankfully). It was refurbished but not by Dell. The BIOS and BMC was horribly outdated. It definitely showed it had been used. It was clean but not detail clean if you understand my meaning. After much stuffing around i got everything working.
I have since brought all my nodes up to the latest BIOS and BMC as of a couple of weeks ago when some of the nodes got L5639's. I would hesitate to try the same with any DCS node your not willing to brick. Permanently.
One option i could see is that if the connections for power supply etc are standard maybe you could buy some spare barebones nodes from the USA (they are reasonably cheap but shipping hurts) for any node you want to run more RAM etc on and swap out the motherboards.
Heres a replacement motherboard from the USA. Check its for the tys and not the older 5400 series CPU's. Maybe someone can confirm? It appears to be the same i brought but mine were for $85 US each and were trays pulled from a server with heatsinks etc rather than new refurbs
NEW Genuine Dell Poweredge C6100 XS23 Node Motherboard Full Assembly D61XP | eBay
Swap your current CPU's, heatsinks etc over and you get 12 RAM slots and support for newer CPUs and 16GB RAM per stick rather than 36GB a Node.
Depends on what you plan to do with it if you can get away with the lesser setup.