User`s guide

ManualsBrandsDell ManualsComputer equipmentPowerEdge Expandable RAID Controller 3

4 Contents

Battery Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Introduction to Write Cache Policy

. . . . . . . . . . . . . . . . . . . . . 19

Write-Back versus Write-Through

. . . . . . . . . . . . . . . . . . . . . 19

How Firmware Manages Cache

. . . . . . . . . . . . . . . . . . . . . . 19

Conditions Under Which Write-Back is Employed

. . . . . . . . . . . . . 20

Conditions Under Which Write-Through is Employed

. . . . . . . . . . . 20

Conditions Under Which Forced Write-Back

With No Battery is Employed

. . . . . . . . . . . . . . . . . . . . . . . . 20

RAID Configuration Information

. . . . . . . . . . . . . . . . . . . . . . . . . 21

Fault Tolerance Features

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Physical Disk Hot Swapping

. . . . . . . . . . . . . . . . . . . . . . . . 22

Patrol Read

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Patrol Read Behavior

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Configuration

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Patrol Read Modes

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Behavior Details

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Blocked Operations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3 Hardware Installation and Configuration . . . . . . . . . . . . . 25

Installing the PERC 5/E Adapter . . . . . . . . . . . . . . . . . . . . . . . . . 25

Installing the Transportable Battery Backup Unit (TBBU)

for PERC 5/E

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Installing the DIMM on a PERC 5/E Adapter

. . . . . . . . . . . . . . . . . . . 28

Transferring a TBBU Between Controllers

. . . . . . . . . . . . . . . . . . . 30

Removing the PERC 5/E Adapter

. . . . . . . . . . . . . . . . . . . . . . 30

Removing the DIMM and Battery from a PERC 5/E Adapter

. . . . . . . . . . . 31

Installing the PERC 5/i Adapter

. . . . . . . . . . . . . . . . . . . . . . . 33

Removing the PERC 5/i Adapter

. . . . . . . . . . . . . . . . . . . . . . . . . 35

Removing the DIMM from a PERC 5/i Card

. . . . . . . . . . . . . . . . . . . 37

Disconnecting the BBU from a PERC 5/i Adapter or a PERC 5/i

. . . . . . . . . 38

Dell_PERC5_UG.book Page 4 Tuesday, February 13, 2007 6:02 PM