User guide

General DIMM slot population guidelines
Observe the following guidelines for all AMP modes:
●
Install DIMMs only if the corresponding processor is installed.
●
When two processors are installed, balance the DIMMs across the two processors.
●
White DIMM slots denote the first slot of a channel (Ch 1-A, Ch 2-B, Ch 3-C, Ch 4-D).
●
Do not mix LRDIMMs, UDIMMs, RDIMMs, or HDIMMs.
●
Do not install more than two UDIMMs per channel. UDIMMs should not be installed in slots Ch
1-I, Ch 2-J, Ch 3-K, or Ch 4-L.
●
HDIMMs require 12 DIMMs per processor.
●
When two processors are installed, install the DIMMs in sequential alphabetical order balanced
between the two processors: P1-A, P2-A, P1-B, P2-B, P1-C, P2-C, and so on.
For detailed memory configuration rules and guidelines, use the Online DDR3 Memory Configuration
Tool on the HP website (http://www.hp.com/go/ddr3memory-configurator).
DIMM speeds are supported as indicated in the following table.
Populated slots (per channel) Rank Speeds supported (MT/s)
1 Single- or dual-rank 1333, 1600
1 Quad-rank 1333
2 Single- or dual-rank 1333
3 Single- or dual-rank 1066
Advanced ECC population guidelines
For Advanced ECC mode configurations, observe the following guidelines:
●
Observe the general DIMM slot population guidelines.
●
DIMMs may be installed individually.
Online spare population
For Online Spare memory mode configurations, observe the following guidelines:
●
Observe the general DIMM slot population guidelines.
●
Each channel must have a valid online spare configuration.
●
Each channel can have a different valid online spare configuration.
●
Each populated channel must have a spare rank:
◦
A single dual-rank DIMM is not a valid configuration.
◦
LRDIMMs are treated as dual-rank DIMMs.
44 Chapter 5 Hardware options installation