Cpus And Dimms; Physical Layout - Cisco UCS C22 M3 User Manual

SUPPLEMENTAL MATERIAL
5 DIMM slots on motherboard (12)
6 CPU and heatsinks (2)
7 PCIe riser 1 (PCIe slot 1)
8 Internal USB 2.0 port
(on motherboard under PCIe riser 1)

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 0 and Bank 1. The blue-colored DIMM banks are for Bank 0 and the
black-colored are for Bank 1.
As an example, DIMM slots A0, B0, and C0 belong to Bank 0, while A1, B1, and C1 belong to Bank 1.
Figure 7 shows how banks and channels are physically laid out on the motherboard. The DIMM slots on the
top (channels A, B, and C) are associated with CPU 1, while the DIMM slots on the bottom (channels D, E,
and F) are associated with CPU 2. Bank 0 slots (blue) are populated before Bank 1 slots (black).
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13 Integrated SAS RAID connectors on
motherboard
(left to right, SCU_Port 0, SCU_Port 1)
14 Software RAID 5 key header on
motherboard
15 RAID SCU option ROM header on
motherboard
16 Mounting point for SuperCap power module
(RAID backup unit)
Cisco UCS C22 M3 High-Density SFF Rack-Mount Server