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Main memory
Mirrored Channel Mode
In this mode, channels 0 and 1 of each CPU form exact copies of each other.
Channel 0 and channel 1 of each CPU must be fitted identically (channel 2
cannot be used in Mirrored Channel Mode since the "counterpart" is
missing).
The slots within a channel do not need to be equipped identically. However,
the corresponding slots in channels 0 and 1 must be equipped identically.
Memory modules with different clock frequencies and different speed ratings
can be used within a channel, whereby the settings of the slowest memory
module are used for the channel.
In Mirrored Channel Mode, the total main memory available in the system is
half as large as the installed memory.
Slot 0
Channel 2
Slot 1
Slot 0
Channel 1
Slot 1
Slot 0
Channel 0
Slot 1
Channel 0
Channel 1
Channel 2
Figure 5: Fitting in Mirrored Channel Mode
26
CPU 1
Slot 1
Slot 0
Slot 1
Slot 0
Slot 1
Slot 0
Technical Manual
Performance features
DIMM 1C
DIMM 2C
DIMM 1B
1.
DIMM 2B
2.
DIMM 1A
1.
DIMM 2A
2.
CPU 2
DIMM 2D
DIMM 1D
DIMM 2E
DIMM 1E
DIMM 2F
DIMM 1F
D2861 (BX922 S2)
Front side
2.
1.
2.
1.
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