● System profile selected (for example, Performance, Performance Per Watt Optimized (OS), or Custom [can be run at high
s
peed or lower])
● Maximum supported DIMM speed of the processors
● Maximum supported speed of the DIMMs
NOTE: MT/s indicates DIMM speed in MegaTransfers per second.
NOTE: Fault Resilient Memory - Non-Uniform Memory Access (NUMA) is supported only when 8 or 16 DIMMs are installed.
The following are the recommended guidelines for installing memory modules:
● Al
l DIMMs must be DDR5.
● Mixing of DIMMs is not allowed
● All DDR5 DIMMs must operate at the same speed per processor.
● If memory modules with different speeds are installed, they operate at the speed of the slowest installed memory module(s).
● Populate memory module sockets only if a processor is installed.
○ For single-processor systems, sockets A1 to A8 are available.
○ For dual-processor systems, sockets A1 to A8 and sockets B1 to B8 are available.
○ A minimum of 1 DIMM must be populated for each installed processor.
● In Optimizer Mode, the DRAM controllers operate independently in the 64-bit mode and provide optimized memory
performance.
Table 131. Memory population rules
Processor Memory population Memory population information
Single processor A{1}, A{2}, A{3}, A{4}, A{5}, A{6}, A{7}, A{8} 1, 2, 4, 6 and 8 DIMMs are allowed
Dual processor (Start with
pr
ocessor1. Processor 1 and
processor 2 population should
match)
A{1}, B{1}, A{2}, B{2}, A{3}, B{3}, A{4}, B{4},
A{5}, B{5}, A{6}, B{6}, A{7}, B{7} A{8}, B{8}
2, 4, 8, 12 and 16 DIMMs are
supported per system
● Supported RDIMM configurations are 1, 2, 4, 6, and 8 DIMMs per processor.
● Populate eight equal memory modules per processor (one DIMM per channel) at a time to maximize performance.
NOTE: Equal memory modules refer to DIMMs with identical electrical specification and capacity that may be from
d
ifferent vendors.
Removing a memory module
Pr
erequisites
1. Follow the safety guidelines listed in the Safety instructions.
2. Follow the procedure listed in Before working inside your system .
3. Remove the air shroud .
WARNING: T
he memory modules are hot to touch for some time after the system has been powered off. Allow
the memory modules to cool before handling them.
NOTE: To ensure proper system cooling, memory module blanks must be installed in any memory socket that is not
o
ccupied. The memory module blanks compatible with T560 are DDR5 gray color blanks. Remove the memory module blanks
only if you intend to install memory modules in these sockets.
Steps
1. L
ocate the appropriate memory module socket.
2. To release the memory module from the socket, simultaneously press the ejectors on both ends of the memory module
socket to fully open.
CAUTION: H
andle each memory module only by the card edges, ensuring not to touch the middle of the
memory module or metallic contacts.
3. Lift the memory module away from the system.
1
84 Installing and removing system components
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