Acer AW2000h, Service Manual

Page: 53 / 106

Hardware removal and installation 47
Memory removal and installation
Each processor has three memory channels (1, 2 and 3 ) and each channel has two slots - A (PxDIMM1A,
2A, 3A in blue) and B (PxDIMM1B, 2B, 3B in black). So, the system has a total of twelve memory slots. The
memory slots support DDR3-1333 registered/unbuffered ECC memory modules.
The folllowing illustration shows the processor 1 memory slots (1) and processor 2 memory slots (2).
Independent mode
•
For all memory modes, slot A in each channel should be populated first and then slot B. If slot A is
empty, then slot B cannot be used.
•
For a single-processor server configuration, install the processor to CPU1 socket and the memory
modules in slots P1DIMM 1A to P1DIMM 3B.
•
If there is a processor installed in CPU2 socket, the system will enable the slots P2DIMM 1A to
P2DIMM 3B.
•
It is recommended to install the DIMM modules in the following sequence:
For single processor
•
Populate slot 1A first, followed by slots 2A, 3A,1B, 2B and 3B.
•
The memory slots for processor 2 are not available.
For dual processors
•
Populate DIMM slots 1A of each CPU first, followed by slots 2A, 3A,1B, 2B and 3B.
•
Install DIMM modules of the same type, size, and manufacturer in the same colored DIMM slots.
Memory population for independent mode
Single processor configuration
Dual processor configuration
Single processor
Processor 1 P1DIMM slots
Channel 1 Channel 2 Channel 3
Configuration 1B 1A 2B 2A 3B 3A
A X
B X X
C X X X
D X X X X
E X X X X X X
Dual processors
Processor 1 P1DIMM slots Processor 2 P2DIMM slots