Troubleshooting guide

30
Cisco UCS B200 M3 Blade Server Installation and Service Note
OL-26624-01
Memory and Performance
Figure 22 shows a logical view of the DIMMs and channels.
Figure 22 Logical Representation of DIMMs and Channels
DIMMs can be used in the blade server in a one DIMM per Channel (1DPC) configuration, in a two
DIMMs per Channel (2DPC) configuration, or a three DIMMs per Channel (3DPC) configuration.
Each CPU in a Cisco UCS B200 M3 blade server supports four channels of three memory slots each. In
a 1 DPC configuration, DIMMs are in slot 0 only. In a 2 DPC configuration, DIMMs are in both slot 0
and slot 1. In a 3 DPC configuration, DIMMs are in slot 0, slot 1, and slot 2.
Table 2 shows the supported order for installing upgrade DIMMs.
331376
Channel A
CPU 1
Logical DIMM 3
A2C2 B2D2 A1C1 B1D1 A0C0 B0D0
CPU 2
E0G0 F0H0 E1G1 F1H1 E2G2 F2H2
Channel B
Channel E
Channel F
Channel C
Channel D
Channel H
Channel G
Logical DIMM 2 Logical DIMM1 Logical DIMM 1 Logical DIMM 2 Logical DIMM 3
Table 2 Preferred DIMM Population Order
DIMMs per CPU CPU 1 installed slots CPU 2 installed slots
1A0E0
2A0, B0E0, F0
3 A0, B0, C0 E0, F0, G0