Cisco UCS C24 M3 User Manual

Cisco UCS C24 M3 High-Density SFF Rack-Mount Server
44
SUPPLEMENTAL MATERIAL
Recommended Memory Population
This section explains the recommended DIMM population order rules for the C24 M3 server.
■ All DIMMs must be DDR3 DIMMs.
■ Mixing of Registered and Unbuffered DIMMs is not allowed per platform.
■ Mixing of ECC and non-ECC DIMMs is not allowed per platform.
■ Do not mix 1333-MHz DIMMs with 1600-MHz DIMMs.
Follow Table 23 when populating DIMMs in the server.
Table 23 Recommended DIMM Population
Total
Memory
Size
CPU 1 CPU 2
Total DIMMs in
System
Blue Slots
Bank 0
(A0, B0, C0)
Black Slots
Bank 1
(A1, B1, C1)
Blue Slots
Bank 0
(D0, E0, F0)
Black Slots
Bank 1
(D1, E1, F1)
48 GB
1
Notes . . .
1. For 48 GB, there are two possible sweet spot configurations:
6 x 8 GB occupies 1 DPC, so there is a possibility of increasing total memory size in the system (beyond 48 GB) by
going to 2 DPC while still maintaining memory speed at 1600 MHz.
If there is no plan to increase total memory size in the system (beyond 48 GB), then 12 x 4GB is more price
effective at this time.
3 x 4 GB 3 x 4 GB 3 x 4 GB 3 x 4 GB 12
3 x 8 GB — 3 x 8 GB — 6
72 GB 3 x 8 GB 3 x 4 GB 3 x 8 GB 3 x 4 GB 12
96 GB
2
2. For 96 GB, there are two possible optimal configurations:
6 x 16GB occupies 1 DPC, so there is a possibility of increasing total memory size in the system (beyond 96 GB) by
going to 2 DPC while maintaining the maximum memory speed at 1600 MHz.
12 x 8GB gives the peak performance for this configuration and is recommended if there is no plan of increasing
the total memory in the future.
3 x 8 GB 3 x 8 GB 3 x 8 GB 3 x 8 GB 12
3 x 16 GB — 3 x 16 GB — 6
120 GB 3 x 16 GB 3 x 4 GB 3 x 16 GB 3 x 4 GB 12
144 GB 3 x 16 GB 3 x 8 GB 3 x 16 GB 3 x 8 GB 12
192 GB 3 x 16 GB 3 x 16 GB 3 x 16 GB 3 x 16 GB 12

Cisco UCS C24 M3 Specifications

General

Brand	Cisco
Model	UCS C24 M3
Category	Server
Language	English