Cisco N2XX-AQPCI03 Datasheet download pdf (Page 47)

Cisco UCS C210 M2 General-Purpose Rack-Mount Server

SUPPLEMENTAL MATERIAL

CPUs and DIMMs

Physical Layout

Each CPU has three DIMM channels:

■ CPU1 has channels A, B, and C.

■ CPU2 has channels D, E, and F.

Each DIMM channel has two banks: Bank 1 and Bank 2. The blue-colored DIMM banks are for Bank 1 and the

black-colored DIMM banks are for Bank 2.

As an example, DIMM slots A1, B1, and C1 belong to Bank 1, while A2, B2, and C2 belong to Bank 2.

Figure 7 shows how banks and channels are physically laid out on the motherboard. The DIMM slots on the

right (channels A, B, and C) are associated with CPU1, while the DIMM slots on the left (channels D, E, and

F) are associated with CPU2. The Bank 1 (blue) DIMM slots are always located farther away from a CPU than

the corresponding Bank 2 (black) slots. Bank 1 slots are populated before Bank 2 slots. If only one DIMM is

used for CPU 1, for example, it must be located in slot 2 (A1, channel A, bank 1); likewise, if only one DIMM

is used for CPU 2, it must be installed in slot 2 (D1, channel D, bank 1).

Figure 7 CPU DIMM Channels and Banks

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 61 62

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Cisco N2XX-AQPCI03 Datasheet Page 47