Datasheet

NOTE:
NOTE:NOTE:
NOTE: Memory configurations listed do not apply to "Factory Integrated Models".
Memory Population Guidelines
Memory Population GuidelinesMemory Population Guidelines
Memory Population Guidelines
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 BL490c G7 server 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
If any Quad rank DIMMs are installed, all channels are limited to only 2 DIMMs per channel
You can only install two quad-rank DIMMs per channel
You can only install two UDIMMs per channel; 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 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; 3;6 on a 3DPC system or 1,4; 2,5; on a 2DPC system
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 1.5V operations
DIMM slot/capacity/populated speed table
DIMM slot/capacity/populated speed tableDIMM slot/capacity/populated speed table
DIMM slot/capacity/populated speed table
DIMM Type Registered DIMMS (RDIMMs)
Registered DIMMS (RDIMMs)Registered DIMMS (RDIMMs)
Registered DIMMS (RDIMMs)
Unbuffered with ECC
Unbuffered with ECCUnbuffered with ECC
Unbuffered with ECC
DIMMs (UDIMMs)
DIMMs (UDIMMs)DIMMs (UDIMMs)
DIMMs (UDIMMs)
DIMM Rank
Single
SingleSingle
Single
Rank
RankRank
Rank
(1R)
(1R)(1R)
(1R) Dual Rank (2R)
Dual Rank (2R)Dual Rank (2R)
Dual Rank (2R) Quad Rank (4R)
Quad Rank (4R)Quad Rank (4R)
Quad Rank (4R)
Single
SingleSingle
Single
Rank
RankRank
Rank
(1R)
(1R)(1R)
(1R) Dual Rank (2R)
Dual Rank (2R)Dual Rank (2R)
Dual Rank (2R)
DIMM Capacity 4GB 2GB 4GB 8GB 8GB 16GB 4GB 16GB 32GB 1GB 2GB 4GB
DIMM Native Speed
(MHz)
1333 1333 1333 1066 1333 1333 1066 1066 1066 1333 1333 1333
DIMM Voltage LV/Std Std Std Std LV/Std LV Std Std LV Std Std Std
SLOTS THAT CAN BE POPULATED
SLOTS THAT CAN BE POPULATEDSLOTS THAT CAN BE POPULATED
SLOTS THAT CAN BE POPULATED
18 slot servers 18 18 18 18 18 18 12 12 12 12 12 12
MAXIMUM CAPACITY (GB)
MAXIMUM CAPACITY (GB)MAXIMUM CAPACITY (GB)
MAXIMUM CAPACITY (GB)
72 36 72 144 144 288 48 192 384 12 24 48
POPULATED DIMM SPEED (MHz)
POPULATED DIMM SPEED (MHz)POPULATED DIMM SPEED (MHz)
POPULATED DIMM SPEED (MHz)
QuickSpecs
HP ProLiant BL490c Generation 7 (G7) Server Blade
HP ProLiant BL490c Generation 7 (G7) Server BladeHP ProLiant BL490c Generation 7 (G7) Server Blade
HP ProLiant BL490c Generation 7 (G7) Server Blade
Memory
DA - 13711 Worldwide — Version 12 — November 14, 2011 Page 27