NOTE:
NOTE:
NOTE:
NOTE: Memory configurations listed do not apply to "Factory Integrated Models".
DDR3 Memory Population Guidelines
DDR3 Memory Population Guidelines
DDR3 Memory Population Guidelines
DDR3 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 HP ProLiant BL685c G7 server blade with thirty-two (32) memory slots:
There are four (4) channels per processor; sixteen (16) channels per server
There are two (2) DIMM slots for each memory channel; thirty-two (32) total slots.
Memory channel 1 consists of the two (2) DIMMs that are furthest from the processor
Memory channel 4 consists of the two (2) DIMMs that are closest from the processor
A minimum of two (2) DIMMs per processor are required
DIMM slots that are white should be populated first
Do not install DIMMs if the corresponding processor is not installed
If only two (2) processors are installed in a four (4) CPU system, only half of the DIMM slots are available
To maximize performance, balance the total memory capacity between all installed processors
To maximize performance, balance the total memory capacity on any given processor across the memory channels
You may only have up to eight (8) ranks installed per channel
You may install up to two (2) quad-rank DIMMs per channel
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
When running virtualization software, a minimum of two (2) DIMMs per processor are required. Populate DIMM sockets 1A
and 5B for each processor socket populated.
DIMM slot/capacity/populated speed table
DIMM slot/capacity/populated speed table
DIMM 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 ECC
Unbuffered with ECC
Unbuffered with ECC
DIMMs (UDIMMs)
DIMMs (UDIMMs)
DIMMs (UDIMMs)
DIMMs (UDIMMs)
DIMM Rank
Single
Single
Single
Single
Rank
Rank
Rank
Rank
(1R)
(1R)
(1R)
(1R)
Dual Rank
Dual Rank
Dual Rank
Dual Rank
(2R)
(2R)
(2R)
(2R)
Quad
Quad
Quad
Quad
Rank
Rank
Rank
Rank
(4R)
(4R)
(4R)
(4R)
Dual Rank
Dual Rank
Dual Rank
Dual Rank
(2R)
(2R)
(2R)
(2R)
DIMM Capacity
4GB
2GB
8GB
16GB
16GB
32GB
N/A
N/A
DIMM Native Speed (MHz)
1333
1333
1333
32GB
1066
1066
N/A
N/A
DIMM Voltage
LV/Std
Std
LV/Std
LV
Std
LV/Std
N/A
N/A
SLOTS THAT CAN BE POPULATED
SLOTS THAT CAN BE POPULATED
SLOTS THAT CAN BE POPULATED
SLOTS THAT CAN BE POPULATED
32 slot servers
32
32
32
32
32
32
N/A
N/A
MAXIMUM CAPACITY (GB)
MAXIMUM CAPACITY (GB)
MAXIMUM CAPACITY (GB)
MAXIMUM CAPACITY (GB)
32 slot servers
128
64
256
512
512
1TB
N/A
N/A
POPULATED DIMM SPEED (MHz)
POPULATED DIMM SPEED (MHz)
POPULATED DIMM SPEED (MHz)
POPULATED DIMM SPEED (MHz)
1 DIMM Per Channel
1333
1333
1333
1333
1066
1066
N/A
N/A
2 DIMM Per Channel
1333
1333
1333
1333
1066
1066/800
*
N/A
N/A
* 1TB capacity is achieved by loading 1 32GB in center socket and remaining sockets with 16GB DIMM
NOTES:
NOTES:
NOTES:
NOTES:
PC3-10600 DIMMs have a maximum speed of 1333MHz. PC3-8500 DIMMs have a maximum speed of 1066MHz.
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
QuickSpecs
HP ProLiant BL685c Generation 7 (G7) Server Blade
HP ProLiant BL685c Generation 7 (G7) Server Blade
HP ProLiant BL685c Generation 7 (G7) Server Blade
HP ProLiant BL685c Generation 7 (G7) Server Blade
Memory
DA - 13655 North America — Version 19 — September 26, 2011
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