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Cisco UCS C200 Server Installation and Service Guide
OL-20732-02
Chapter 3 Maintaining the Server
Installing or Replacing Components
Figure 3-16 Physical Representation of Banks and Channels
Memory Population Rules
When considering the memory configuration of your server, you should consider the following items:
• DIMMs within the server should all be the same type, speed, and size. Do not mix different size
DIMMs or DIMMs with different clock rates in the same server. Doing so causes the system to set
the memory system speed to that of the slowest installed DIMMs.
• DIMMs can be used either in a one DIMM per Channel (1DPC) configuration or in a two DIMMs
per Channel (2DPC) configuration.
• There are blue and black DIMM slots. Populate blue slots in a bank first.
• (Generation M2 only) Low-voltage (1.35 V) DIMM and standard-voltage DIMM (1.5 V) can be
mixed in the same server. Note that this causes the system BIOS to default to standard-voltage
operation (Performance Mode). See Low-Voltage DIMM Considerations (Generation M2 Only),
page 3-25.
Note Low voltage DIMMs are supported in Generation M2 servers only.
Rear of Server
Front of Server
F1 F2 E1 E2 D1 D2
A2 A1 B2 B1 C2 C1
CPU 2 CPU 1
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