The (DL380) G5 is dead, Long live The G6!

Just started to spec' my first G6 ProLiant today. Damn, does the memory setup make your head hurt...

For servers with eighteen (18) memory slots:


  • [*]There are three (3) channels per processor; six (6) channels per server
    [*]There are three (3) DIMM slots for each memory channel; eighteen (18) total slots
    [*]Memory channel 1 consists of the three (3) DIMMs that are closest to the processor
    [*]Memory channel 3 consists of the three (3) DIMMs that are furthest from the processor
    ​
  • DIMM slots that are white should be populated first
  • Do not mix Unbuffered memory (UDIMMs) with Registered memory (RDIMMs)
  • Do not install DIMMs if the corresponding processor is not installed
  • If only one processor is installed in a 2CPU system, only half of the DIMM slots are available
  • To maximize performance, balance the total memory capacity between all installed processors
  • It is not required, but it is recommended to load the channels similarly if possible
  • You can only have up to eight (8) ranks installed per channel
  • You can only install two quad-rank DIMMs per channel
  • You can only install two UDIMMs per channel; if available, the third slot in the channel must remain empty
  • Populate DIMMs from heaviest load (quad-rank) to lightest load (single-rank) within a channel
  • Heaviest load (DIMM with most ranks) within a channel goes furthest from the chipset
  • For memory mirroring mode, channel 3 must be unpopulated. Channels 1 and 2 are populated identically
  • For lock-step mode, channel 3 must be unpopulated. DIMMs in channels 1 and 2 will be installed in pairs. The paired slots will be 1,4; 2,5; 3;6 on a 3DPC system or 1,4; 2,5; on a 2DPC system
Click to expand...
 
#Chri5# said:
One flaw though. If already have memory in your server, it asks for the part code from the DIMMs and which slots they are in. How you know this when you've not bought your server yet, I'm not sure... :confused: :rolleyes:
Click to expand...

Err...What part of that is confussing? Perhaps the people who have already purchased the server may wish to perform a memory upgrade hence such option is avaliable with the tool.
 
Curiosityx said:
Err...What part of that is confussing? Perhaps the people who have already purchased the server may wish to perform a memory upgrade hence such option is avaliable with the tool.
Click to expand...

Yes, great when you've already got the box. How are you meant to spec' the correct combination of DIMMs to order at the same time as the server it's self though?
 
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