Troubleshooting guide

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Cisco UCS B22 Blade Server Installation and Service Note

OL-27513 -01

Removing a Blade Server Cover

The blade server contains 12 DIMM slots—six for each CPU. Each set of six DIMM slots is arranged

into three channels, where each channel has 2 DIMMs (see Figure 16).

Each channel is identified by a letter—B, C, D for CPU1, and F, G, H for CPU 2. Each DIMM slot is

identified by a number, either 0 or 1. Note that each DIMM slot 0 is blue, while each slot 1 is black.

Figure 16 shows how DIMMs and channels are physically laid out on the blade server. The DIMM slots

in the upper right are associated with CPU 2, while the DIMM slots in the lower left are associated with

CPU 1.

Figure 16 Numbering of DIMMs and Channels

Note The memory in the upper right cannot communicate with the memory in lower left, unless both CPUs

are present.

CPU 1

CPU 2

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