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18 Technical Manual D2529 (TX300 S4)
Main memory Features
Module population
Figure 3: Layout of the memory modules
– The memory banks have to be populated sequentially top down in pairs of
FBD PC2-4200F oder FBD PC2-5300 Fully Buffered DIMM memory
modules.
– Each pair consists of identical memory modules.
There are three modes of operation for the main memory:
– Non-mirrored mode
– Mirrored mode
– Sparing mode
Depending on the mode of operation there are different population requiren-
ments.
DIMM 2D
DIMM 2C
DIMM 1D
DIMM 1C
DIMM 4D
DIMM 4C
DIMM 3C
DIMM 3D
DIMM 2B
DIMM 2A
DIMM 4B
DIMM 4A
DIMM 3A
DIMM 3B
DIMM 1B
DIMM 1A
DIMM C/D
DIMM A/B