Dell R710 manual Memory, Mode Module Size, Advanced ECCa, Mirroring

Dell™ PowerEdge™ R710 Technical Guidebook

memory	UDIMM
	memory
mode	module
	size
OPTIMIZER	1GB
Advanced ECCa	2GB
	1GB
Mirroring	2GB
	1GB
	2GB

			memory					single		dual processor
			sockets					processor
1			2			3		physical	available	physical	available
								memory	memory	memory	memory
		4			5		6	(GB)	(GB)	(GB)	(GB)
	x							1		2
	x			x				2		4
	x			x		x		3	All	6	All
	x	x		x	x			4		8
	x	x		x	x	x	x	6		12
	x							2		4
	x			x				4		8
	x			x		x		6	All	12	All
	x	x		x	x			8		16
	x	x		x	x	x	x	12		24
	None			x		x		2	All	All	All
				x	x	x	x	4
	None			x		x		4	All	All	All
				x	x	x	x	8
	None			x		x		2	1	4	2
				x	x	x	x	4	2	8	4
	None			x		x		4	2	8	4
				x	x	x	x	8	4	16	8

Table: UDIMM Memory Configurations (Each Processor)

aWhen available

bRequires x4- or x8-based memory modules

F.Mirroring

The system supports memory mirroring if identical memory modules are installed in the two channels closest to the processor (memory is not installed in the farthest channel). Mirroring must be enabled in the System Setup program. In a mirrored configuration, the total available system memory is one-half of the total installed physical memory.

G. Advanced ECC (Lockstep) Modes

In this configuration, the two channels closest to the processor are combined to form one 128-bit channel. This mode supports Single Device Data Correction (SDDC) for both x4- and x8-based memory modules. Memory modules must be identical in size, speed, and technology in corresponding slots.

H. Optimizer (Independent Channel) Mode

In this mode, all three channels are populated with identical memory modules. This mode permits a larger total memory capacity but does not support SDDC with x8-based memory modules. A minimal single- channel configuration of 1GB memory modules per processor is also supported in this mode.

28