Cisco Systems A03D600GA2 manual Recommended Memory Configuration

SUPPLEMENTAL MATERIAL

Recommended Memory Configuration

This section explains the recommended DIMM population order rules for the C220 M3 server.

■All DIMMs must be DDR3 DIMMs.

■Do not mix:

—DIMMs with different sizes or clock rates in a channel

—RDIMMs and LRDIMMs

—ECC and non-ECC DIMMs

■There are blue and black DIMM slots. Populate blue slots first.

■When single- and dual-rank DIMMs are populated for 2DPC, always populate the dual-rank DIMM in the blue DIMM slot and the single-rank DIMM in the black DIMM slot.

Many memory configurations are possible. For best results, follow Table 34 when populating DIMMs.

Table 34	Recommended Memory Configurations1
Total		CPU 1 DIMMs		CPU 2 DIMMs		DIMM Max	Total
		Blue Slots	Black Slots	Blue Slots	Black Slots
System						Operating	DIMMs in
		Bank 1	Bank 2	Bank 1	Bank 2
Memory						Speed	the
		(A1, B1,	(A2, B2,	(E1, F1,	(E2, F2,
Size						(MHz)	System
		C1, D1)	C2, D2)	G1, H1)	G2, H2)
32 GB		4x4 GB	—	4x4 GB	—	1600	8
		2x8 GB	—	2x8 GB	—	1600	4
64 GB		4x4 GB	4x4 GB	4x4 GB	4x4 GB	1600	16
		4x8 GB	—	4x8 GB	—	1600	8
96 GB		4x8 GB	2x8 GB	4x8 GB	2x8 GB	1600	12
		3x16 GB	—	3x16 GB	—	1600	6
		4x8 GB	4x4 GB	4x8 GB	4x4 GB	1600	16
128 GB		4x8 GB	4x8 GB	4x8 GB	4x8 GB	1600	16
		4x16 GB	—	4x16 GB	—	1600	8
192 GB		4x16 GB	2x16 GB	4x16 GB	2x16 GB	1600	12
		4x16 GB	4x8 GB	4x16 GB	4x8 GB	1600	16
256 GB		4x16 GB	4x16 GB	4x16 GB	4x16 GB	1600	16
512 GB		4x32 GB	4x32 GB	4x32 GB	4x32 GB	13332	16

Notes . . .

1.Rows marked in yellow indicate best performance.

2.32 GB LRDIMMs run in some cases at a maximum speed of 1333 MHz in 2DPC configurations, even though the specified DIMM speed is higher.

62 Cisco UCS Cisco UCS C220 M3 High-Density Rack Server (Small Form Factor Disk Drive Model)