07-22-2013 06:45 AM
Noble had a memory configuration question:
I have BL 460c G7 server with only one processor , I want to upgrade memory to 192 GB on this server but Memory slot is full on processor1. Is that I can install Memory on second Processor memory slot , without adding second processor ?
My system configuration is below
Server Model : BL 460c G7 , Processor 3.2Ghz, 96GB Memory
Processor Speed 3200 MHz
Execution technology 4/4 cores;
Memory Memory Component Status
PROC 1 DIMM 1D 16384 MB 1333 MHz
PROC 1 DIMM 2A 16384 MB 1333 MHz
PROC 1 DIMM 3E 16384 MB 1333 MHz
PROC 1 DIMM 4B 16384 MB 1333 MHz
PROC 1 DIMM 5F 16384 MB 1333 MHz
PROC 1 DIMM 6C 16384 MB 1333 MHz
PROC 2 DIMM 1D Not installed
PROC 2 DIMM 2A Not installed
PROC 2 DIMM 3E Not installed
PROC 2 DIMM 4B Not installed
PROC 2 DIMM 5F Not installed
PROC 2 DIMM 6C Not installed
In the PROC 2 DIMM , I can insert memory without installing Processor 2
Input from William:
No, you must have a 2nd CPU installed to use those memory slots.
And a reply from Kishor:
The short and simple answer is NO.
As per the BL46c G7 quickspecs, http://h18004.www1.hp.com/products/quickspecs/1370
Memory Population Guidelines
For detailed memory configuration rules and guidelines, please use the Online DDR3 Memory Configuration Tool:
Some DIMM installation guidelines are summarized below:
For the HP ProLiant BL460c G7 server with twelve (12) memory slots:
There are three (3) channels per processor; six (6) channels per server
There are two (2) DIMM slots for each memory channel; twelve (12) total slots.
Memory channel 1 consists of the two (2) DIMMs that are closest to the processor
Memory channel 3 consists of the two (2) 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 two processor 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
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 processor
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 on the BL460c G7
Low Voltage DIMMs can only be used with Intel Xeon 5600 series processors.
If mixing DIMM voltage is a requirement, please note that the DIMMs will run at 1.5V since all 1.35V are capable of supporting
Other comments or suggestions?
07-31-2013 12:12 PM - edited 07-31-2013 12:17 PM
No, for using all DIMM slots you must populate all CPU sockets. Because in G7 RAM controller for DIMM access is contained in CPU.