Memory, Quickspecs – HP ProLiant DL380 User Manual
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NOTE: Memory configurations listed do not apply to "Factory Integrated Models".
DDR3 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 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
DIMM Type ->
Registered Dimms (RDIMMs)
Unbuffered with ECC DIMMs (UDIMMs)
DIMM Rank ->
Dual Rank (2R)
Quad Rank (4R)
Single Rank (1R)
Dual Rank (2R)
DIMM Capacity ->
2GB
4GB
8GB
8GB
4GB
16GB
1GB
2GB
DIMM Native Speed
(MHz) ->
1333
1333
1067
1333
1067
1067
1333
1333
SLOTS THAT CAN BE POPULATED
18 slot servers
18
18
18
18
12
12
12
12
MAXIMUM CAPACITY (GB)
18 slot servers
36
72
144
144
48
192
12
24
POPULATED DIMM SPEED (MHz)
1 DIMM Per
Channel
1333
1333
1067
1333
1067
1067
1333
1333
2 DIMM Per
Channel
1333
*
1333
*
1067
1333
*
800
800
1067
1067
3 DIMM Per
Channel
800
800
800
800
*
n/a
n/a
n/a
* - supported with ROM update via ROM Based Setup Utility (RBSU). UDIMM support is only on 12-slot servers
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
If you install 1x 1066MHz DIMM in channel 1 and 1x 1333MHz DIMM in channel 2, you still run at 1066MHz
If you install 1x 1066MHz DIMM in channel 1 and 5x 1333MHz DIMMs with 1 DIMM Per Channel (DPC) in each of the
QuickSpecs
HP ProLiant DL380 Generation 6
Memory
DA - 13234 Worldwide QuickSpecs — Version 16 — 8.28.2009
Page 35