HP ProLiant ML150

HP ProLiant ML150 G6 Memory Population Guidelines
NOTE: Memory configurations listed do not apply to "Factory Integrated Models".
NOTE: Charts do not represent all possible memory configurations. Memory must be populated in one of the following ways.
For detailed memory configuration rules and guidelines, please use the Online DDR3 Memory Configuration Tool:
www.hp.com/go/ddr3memory-configurator
Some DIMM installation guidelines are summarized below:
For the HP ProLiant ML150 G6 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 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
DIMM Type
Registered DIMMs (RDIMMs) Unbuffered DIMMs (UDIMMs)
DIMM Rank
Dual Rank (2R) Quad Rank (4R) Single Rank (1R) Dual Rank (2R)
DIMM Capacity 2GB 4GB 2GB 1GB 2GB 2GB 4GB
DIMM Native Speed (MHz) 1333 1333 * 1333 * 1333 1333
SLOTS THAT CAN BE POPULATED
12 slot servers 12 12 * 12 * 12 12
MAXIMUM CAPACITY (GB)
12 slot servers 24 48 * 12 * 24 48
POPULATED DIMM SPEED (MHz)
1 DIMM Per Channel 1333 1333 * 1333 * 1333 1333
2 DIMM Per Channel 1066 1066 * 1066 * 1066 1066
* - not supported by HP at this time.
NOTES:
Mixing DIMM speeds is allowed, but the system processor speed rules always override the DIMM capabilities
If you do mix DIMM speeds, the memory bus will default to the minimum clock rate of all DIMMs in the system - even if the slower
DIMM is on the other processor
QuickSpecs
HP ProLiant ML150 Generation 6 (G6)
Memory
DA - 13249 North America — Version 33 — September 24, 2012 Page 29