Intel Server RAID Q1 2009 boot camp training lab workbook

Q1 2009 Intel

Server RAID Boot Camp Training

Lab 2: Impact of Cache Settings on RAID Performance

Introduction

Incorrect cache settings are the most frequent reason for slow RAID performance. Depending on the

measurement test, performance can be up to 50 times slower with incorrect cache settings than

with correct cache settings.

In this lab, we demonstrate the impact of the following settings: Read Policy, Write Policy, and Disk

Cache Policy.

Lab Objectives

 Understand the impact of Read Ahead

 Understand the impact of Write Back cache

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