HP ProLiant SL270s HP ProLiant SL270s Gen8 Server User Guide - Page 36

Lockstep Memory population guidelines, Population order, Installing a DIMM

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• 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 35). • 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 H) • RDIMM: Sequentially in alphabetical order (A through H) • UDIMM: A through H, sequentially in alphabetical order After installing the DIMMs, use RBSU to configure Advanced ECC, online spare, or lockstep memory support. Installing a DIMM CAUTION: To avoid damage to the hard drives, memory, and other system components, the air baffle, and drive blanks must be installed when the server is powered up. 1. Power down the server (on page 15). 2. Remove the server from the chassis (on page 15). 3. If installed, remove the FBWC capacitor pack ("Installing the FBWC capacitor pack" on page 42). 4. Remove the processor air baffle. 5. Open the DIMM slot latches. Hardware options installation 36

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Hardware options installation 36
•
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
35
).
•
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 H)
•
RDIMM: Sequentially in alphabetical order (A through H)
•
UDIMM: A through H, sequentially in alphabetical order
After installing the DIMMs, use RBSU to configure Advanced ECC, online spare, or lockstep memory support.
Installing a DIMM
CAUTION:
To avoid damage to the hard drives, memory, and other system components, the air
baffle, and drive blanks must be installed when the server is powered up.
1.
Power down the server (on page
15
).
2.
Remove the server from the chassis (on page
15
).
3.
If installed, remove the FBWC capacitor pack ("
Installing the FBWC capacitor pack
" on page
42
).
4.
Remove the processor air baffle.
5.
Open the DIMM slot latches.