Cisco UCS C220 Installation And Service Guide

3-19
Cisco UCS C220 Server Installation and Service Guide
OL-25760-01
Chapter 3 Maintaining the Server
Installing or Replacing Server Components
Figure 3-12 DIMM Slots and CPUs
DIMM Population Rules
Observe the following guidelines when installing or replacing DIMMs:
• Each CPU supports four memory channels.
– CPU1 supports channels A, B, C, and D.
– CPU2 supports channels E, F, G, and H.
• Each channel has two DIMM slots (for example, channel A = slots A1 and A2).
– A channel can operate with one or two DIMMs installed.
– If a channel has only one DIMM, populate slot 1 first (the blue slot).
• When both CPUs are installed, populate the DIMM slots of each CPU identically.
– Fill blue slots in the channels first: A1, E1, B1, F1, C1, G1, D1, H1
– Fill black slots in the channels second: A2, E2, B2, F2, C2, G2, D2, H2
• Any DIMM installed in a DIMM socket for which the CPU is absent is not recognized. In a
single-CPU configuration, populate the channels for CPU1 only.
C1
C2
D1
D2
B2
B1
A2
A1
G1
G2
H2
H1
F2
F1
E1
E2
Front of Server
CPU1
CPU2
331707

Cisco UCS C220 Specifications

General

Processor	Intel Xeon Scalable Processors
Management	Cisco Integrated Management Controller (CIMC)
Memory	Up to 3TB DDR4
Network Interface	Up to 4 x 10Gb Ethernet ports
Power Supply	Redundant power supplies, various wattage options
RAID Support	RAID 0, 1, 5, 6, 10, 50, 60