NEC express5800 A2010b User Manual page 201

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Table of Contents

Chapter 2 Preparations

Memory Riser #1

This feature can be used under the following conditions:

The four DIMMs used for Lock Step Pair and Mirroring Pair between SMI channel must be of the same

Memory Scrubbing

The server provides the patrol scrubbing and demand scrubbing features.

Patrol scrubbing feature

This feature checks system memory regularly. If a correctable error such as single-bit error is detected,

correct it and write back that data to memory to keep the memory in errorless condition.

Demand scrubbing feature

This feature checks memory during operation. If a correctable error such as single-bit error is detected,

correct it and write back that data to memory to keep the memory in errorless condition.

By correcting an error in advance can reduce the occurrence of uncorrectable error.

Memory Buffer #1

Memory Controller #1

Express5800/A1040b, A2040b, A2020b, A2010b User's Guide

1. Installing / Removing Internal Options

Memory memory

Memory Buffer #2

Memory Controller #2

Express5800 a1040bExpress5800 a2020bExpress5800 a2040b