Cisco UCS-HDD300GI2F208= Datasheet download pdf (Page 47)

Cisco UCS C240 M3 High-Density Rack Server (Large Form Factor Hard Disk Drive Model)

SUPPLEMENTAL MATERIAL

CPUs and DIMMs

Physical Layout

Each CPU has four DIMM channels:

■ CPU1 has channels A, B, C, and D

■ CPU2 has channels E, F, G, and H

Each DIMM channel has three banks: bank 1, 2, and 3. The blue-colored DIMM slots are for bank 1 and the

black-colored are for banks 2 and 3.

As an example, DIMM slots A1, B1, C1, and D1 belong to bank 1, while A2, B2, C2, and D2 belong to bank 2.

Figure 6 shows how banks and channels are physically laid out on the motherboard. The DIMM slots on the

top (channels A, B, C, and D) are associated with CPU 1, while the DIMM slots on the bottom (channels E, F,

G, and H) are associated with CPU 2. The bank 1 (blue) DIMM slots are always located farther away from a

CPU than the corresponding bank 2 or 3 (black) slots. Bank 1 slots (blue) are populated before bank 2 and 3

slots (black).

8 SCU upgrade ROM header 17 Power supplies (two, hot-swappable

access through rear panel)

9 Integrated RAID on motherboard, and mini-SAS

connectors

18 SuperCap RAID backup unit mounting

locations (two, on air baffle not shown in

this view)

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Cisco UCS-HDD300GI2F208= Datasheet Page 47