Intel S5000XAL manual Single Branch Mode Sparing Dimm Configuration

Functional Architecture Intel® Server Board S5000PAL / S5000XAL TPS

3.1.3.4.2DIMM Sparing Mode Memory Configuration

The MCH provides DIMM sparing capabilities. Sparing is a RAS feature that involves configuring a DIMM to be placed in reserve so it can be use to replace a DIMM that fails. DIMM sparing occurs within a given bank of memory and is not supported across branches.

There are two supported Memory Sparing configurations.

3.1.3.4.2.1Single Branch Mode Sparing

Slot 2

Slot 1

DIMM	_A2	DIMM_B2	DIMM_C2	DIMM_D2
DIMM	_A1	DIMM_B1	DIMM_C1	DIMM_D1
Channel A		Channel B	Channel C	Channel D
	Branch 0		Branch 1

Intel® 5000P/5000X Memory Controller Hub

Figure 14. Single Branch Mode Sparing DIMM Configuration

•DIMM_A1 and DIMM_B1 must be identical in organization, size and speed.

•DIMM_A2 and DIMM_B2 must be identical in organization, size and speed.

•DIMM_A1 and DIMM_A2 need not be identical in organization, size and speed.

•DIMM_B1 and DIMM_B2 need not be identical in organization, size and speed.

•Sparing should be enabled in BIOS setup.

•BIOS will configure Rank Sparing Mode.

•The larger of the pairs {DIMM_A1, DIMM_B1} and {DIMM_A2, DIMM_B2} will be selected as the spare pair unit.

32Revision 1.4

Intel order number: D31979-007