Server Technology PP02 Datasheet Page 30

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Intel
®
Server Board S5000PAL / S5000XAL TPS Functional Architecture
Revision 1.7
Intel order number: D31979-010
31
3.1.3.4.2 DIMM 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.
3.1.3.4.2.1 Single Branch Mode Sparing
Channel A Channel B Channel C Channel D
Branch 0 Branch 1
Inte5000P/5000X Memory Controller Hub
Slot 1
Slot 2
DIMM_C2
DIMM_C1
DIMM_D2
DIMM_D1
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
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.
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