For detailed memory configuration rules and guidelines, please use the Online DDR3 Memory Configuration Tool: www.hp.com/go/ddr3memory-configrator

DIMM installation rules:

• 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


• No mixing DIMM voltage; all DIMMs must be the same voltage

Basic memory slot & population diagram

• Population order; start with "A" first, "B" second, "C" third, etc.

Standard memory configuration (1 CPU model)

• 4GB, consisting of three (2) 2GB dual-rank PC3-10600 RDIMMs (Base model)

Standard memory plus optional memory (1 CPU model)

• 60GB, consisting of two (2) 2GB RDIMMs plus seven (7) 8GB RDIMMs
  
  
  
  • 2x 2GB dual-rank PC3-10600 RDIMMs
  
  
  • 7x 8GB dual-rank PC3-8500 RDIMMs
  
  
  
  

Standard memory replaced with optional memory (1 CPU model)
RDIMM maximum configuration

• 72GB, consisting of nine (9) 8GB dual-rank PC3-8500 RDIMMs

UDIMM maximum configuration (1 CPU model)

• 12GB, consisting of six (6) 2GB dual-rank PC3-10600 UDIMMs

Standard memory replaced with optional memory (2 CPU model)
RDIMM maximum configuration

• 144GB, consisting of eighteen (18) 8GB dual-rank PC3-8500 RDIMMs

UDIMM maximum configuration (2 CPU model)

• 24GB, consisting of twelve (12) 2GB dual-rank PC3-10600 UDIMMs