General dimm slot population guidelines, Advanced ecc population guidelines, Single-processor advanced ecc population order – HP ProLiant DL380 G6 Server User Manual
Page 45: Multi-processor advanced ecc population order
Hardware options installation 45
Lockstep mode uses channel 1 and channel 2. Channel 3 is not populated. Because channel 3 cannot be
populated when using Lockstep mode, the maximum memory capacity is lower than Advanced ECC mode.
Memory performance with Advanced ECC is also slightly higher.
General DIMM slot population guidelines
Observe the following guidelines for all AMP modes:
•
Populate DIMM slots for a processor only if the processor is installed.
•
To maximize performance in multi-processor configurations, distribute the total memory capacity
between all processors as evenly as possible.
•
Do not mix Unbuffered and Registered PC3 DIMMs.
•
Each channel supports up to two Unbuffered DIMMs.
•
If quad-rank DIMMs are installed for a processor, a maximum of two DIMMs can be installed on each
channel for that processor.
•
If a channel contains quad-rank DIMMs, the quad-rank DIMM must be installed first on that channel.
DIMM speeds are supported as indicated in the following table.
Populated slots
(per channel)
Rank
Speeds supported
(MHz)
1
Single- or dual-rank
1333, 1066
1
Quad-rank
1066
2
Single- or dual-rank
1066
3
Single- or dual-rank
800
Advanced ECC population guidelines
For Advanced ECC mode configurations, observe the following guidelines:
•
Observe the general DIMM slot population guidelines (on page
•
DIMMs may be installed individually.
Single-processor Advanced ECC population order
For Advanced ECC mode configurations with a single processor, populate the DIMM slots in the following
order:
•
RDIMM: Sequentially in alphabetical order (A through I)
•
UDIMM: A through F, sequentially in alphabetical order. Do not populate DIMM slots G through I.
Multi-processor Advanced ECC population order
For Advanced ECC mode configurations with multiple processors, populate the DIMM slots for each
processor in the following order:
•
RDIMM: Sequentially in alphabetical order (A through I)
•
UDIMM: A through F, sequentially in alphabetical order. Do not populate DIMM slots G through I.