Hardware options installation 44
Online spare population
For Online Spare memory mode configurations, observe the following guidelines:
•
Observe the general DIMM slot population guidelines (on page
43
).
•
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:
o
A single dual-rank DIMM is not a valid configuration.
o
LRDIMMs are treated as dual-rank DIMMs.
Lockstep Memory population guidelines
For Lockstep memory mode configurations, observe the following guidelines:
•
Observe the general DIMM slot population guidelines (on page
43
).
•
DIMM configuration on all channels of a processor must be identical.
•
In multi-processor configurations, each processor must have a valid Lockstep Memory configuration.
•
In multi-processor configurations, each processor may have a different valid Lockstep Memory
configuration.
Population order
For memory configurations with a single processor or multiple processors, populate the DIMM slots in the
following order:
•
LRDIMM: Sequentially in alphabetical order (A through L)
•
RDIMM: Sequentially in alphabetical order (A through L)
After installing the DIMMs, use RBSU to configure Advanced ECC, online spare, or lockstep memory support.
Advanced ECC population guidelines
For Advanced ECC mode configurations, observe the following guidelines:
•
Observe the general DIMM slot population guidelines (on page
43
).
•
DIMMs may be installed individually.
Installing a DIMM
The server supports up to 48 DIMMs.
WARNING:
To reduce the risk of personal injury, electric shock, or damage to the equipment,
remove the power cord to remove power from the server. The front panel Power On/Standby
button does not completely shut off system power. Portions of the power supply and some internal
circuitry remain active until AC power is removed.
To install a DIMM:
1.
Power down the server (on page
18
).
2.
Remove all power:
