Dell PowerVault Series Manuale utente

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Dell™ PowerVault™ Data Protection

Solution System Recovery Guide

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of

your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data

and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury,

or death.

____________________

Information in this document is subject to change without notice.

Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc.

is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, PowerEdge, PowerVault, and Dell OpenManage

are trademarks of Dell Inc.; Microsoft, Windows, SQL Server,and Windows Server are either

trademarks or registered trademarks of Microsoft Corporation in the United States and/or other

countries.

Other trademarks and trade names may be used in this document to refer to either the entities claiming

the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and

trade names other than its own.

August 2008 Rev. A01

Contents 3

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Recovery Solution Map . . . . . . . . . . . . . . . 7

3 Recovering from Disk Failures . . . . . . . . . 9

Detecting and Monitoring Disk Failures . . . . . . . . . 9

RAID Adapter Audible Alarm . . . . . . . . . . . . . 9

OpenManage™ Server Administrator . . . . . . . . 9

Dell OpenManage™ IT Assistant. . . . . . . . . . 10

Replacing Disks . . . . . . . . . . . . . . . . . . . . . 10

Replacing Internal Disks . . . . . . . . . . . . . . 11

Replacing Disks in an External Storage Enclosure. 11

Recovering After a Disk Failure . . . . . . . . . . . . . 11

Single Disk Failure Recovery . . . . . . . . . . . . 11

Multiple Disk Failure Recovery . . . . . . . . . . . 13

4 Operating System Reinstallation . . . . . . . 15

Using the Dell Systems Build and Update Utility . . . . 15

BIOS, Firmware and Driver Updates . . . . . . . . . . 24

OS Updates Using Windows Update . . . . . . . . . . 24

Localizing the Operating System . . . . . . . . . . . . 24

4Contents

Installing Multilingual User Interface Pack. . . . . 24

Applying the MUI Language: . . . . . . . . . . . . 25

5 OMSA Reinstallation . . . . . . . . . . . . . . . 27

6 DPM Reinstallation . . . . . . . . . . . . . . . . 29

Prerequisite Software and Network Configuration

Requirements . . . . . . . . . . . . . . . . . . . . 29

Virtual Disk Configuration for the DPM

Storage Pool . . . . . . . . . . . . . . . . . . . . 31

DPM Installation . . . . . . . . . . . . . . . . . . 31

DPM Updates . . . . . . . . . . . . . . . . . . . . 34

7 PowerVault Data Protection Solution

Configuration Wizard Reinstallation . . . . 35

Installing the Wizard. . . . . . . . . . . . . . . . . . . 35

Running the Wizard . . . . . . . . . . . . . . . . . . . 35

8 Recovering DPM Databases and Replicas 37

9 Other Documents and Resources . . . . . 39

Microsoft Information . . . . . . . . . . . . . . . . . . 39

Dell Hardware Information . . . . . . . . . . . . . . . 39

Dell Software Information . . . . . . . . . . . . . . . . 39

Introduction 5

Introduction

This document describes the steps necessary to recover your Dell™

PowerVault™ Data Protection Solution from a number of hardware or

software failures. Depending on the type of failure, you experience, you may

need to:

• Recover from disk failures

• Reinstall the operating system

• Reinstall Dell™ OpenManage™ system management applications

• Reinstall the Data Protection Solution Configuration Wizard

• Reinstall Microsoft

System Center Data Protection Manager

(DPM) 2007

• Recover the DPM server's recovery point data

NOTE: Prior to performing the recovery steps in this document, review the Dell

PowerVault Data Protection Solution Information Update for the latest information.

NOTE: For documents and recovery media referenced in this guide, see the Dell

PowerVault Data Protection Solution Quick Reference Guide at support.dell.com.

6Introduction

Recovery Solution Map 7

Recovery Solution Map

This document is comprised of sections describing specific recovery topics

and procedures. Table 2-1 shows how each failure type potentially affects the

various DPM components, and which section in this document is applicable

to the specific failure type.

As you explore different failure/recovery scenarios, keep the following

guidelines in mind:

• Re-installation of the operating system usually requires you to reinstall all

of the applications on your system.

• A non-recoverable failure of the RAID group containing the operating

system will require reinstallation of the operating system and all

applications

• A non-recoverable failure of the RAID group containing one or more DPM

replicas requires restoration of the replicas on that RAID group from tape,

or a secondary DPM server.

8Recovery Solution Map

Table 2-1. Recovery Solution Map

Potentially Affected System Components

Failure Type RAID

Group

Operating

System

OMSA DPM

Application

Wizard DPM DB

Replicas

Use the

following

sections to

resolve these

issues. (See

the section

titles below

Table 2-1.)

Operating

System XX XXX

4, 5, 6, 7, 8

OMSA

Application X5

DPM Application XX

6, 8

Data Protection

Solution

Configuration

Wizard

DPM DB or

Replicas X8

OS/DPM

Application RAID

Group

XXX XXX

3, 4, 5, 6, 7, 8

DPM Replica

RAID Group XX

3, 8

Section Title

3Recovering from Disk Failures

4Operating System Reinstallation

5OpenManage Server Administrator Reinstallation

6Data Protection Manager Reinstallation

7Dell PowerVault Data Protection Solution

Configuration Wizard Reinstallation

8Recovering DPM Databases and Replicas

Recovering From Disk Failures 9

Recovering from Disk Failures

Your system's internal disk storage has been pre-configured as RAID 5.

Additionally, as described in the Dell PowerVault Data Protection Solution

Storage Expansion Guide, any additional disks you add to your system will be

configured as RAID 5.

RAID 5 provides uninterrupted operation of your system in the event a single

disk drive in the group fails. However, until the failed disk drive has been

replaced, your system will operate in degraded state. During this degraded

state, another disk failure within the same RAID group will cause loss of all

data in that RAID group. Therefore, it is extremely important to monitor the

status of your system's disks and to replace any failed disk within the same

RAID group as quickly as possible.

Detecting and Monitoring Disk Failures

To optimize the protection of RAID 5-configured storage on your system, it is

essential that you are able to detect hard drive failures immediately as they

occur. Replacing failed disks as soon as possible reduces the risk of unplanned

downtime and loss of critical data.

The following methods can be used to monitor the health of your system's

physical disks.

RAID Adapter Audible Alarm

Refer to the "Enabling the Alarm to Alert in Case of Physical Disk Failures"

section of the Dell™ PowerEdge™ Expandable RAID Controller (PERC) User's

Guide for more information on how to configure the audible alarm. Note that

this feature is not available on all PERC adapters. Refer to your specific

PERC adapter documentation to determine whether this feature is

supported.

OpenManage™ Server Administrator

Dell™ OpenManage™ Server Administrator (OMSA) can monitor the health

of both internal and external disks. Refer to "Replacing Disks" in this chapter

for more information.

10 Recovering From Disk Failures

Figure 3-1 shows how disk status is reported in OMSA.

Figure 3-1. Physical disk status

Dell OpenManage™ IT Assistant

Dell OpenManage™ IT Assistant is a central monitoring console, which can

be used to monitor the status of your Dell systems running OMSA. Refer to

the Dell OpenManage™ IT Assistant User's Guide for more information on

installing and using IT Assistant.

Replacing Disks

When replacing hard drives, only use hard drives included in the Dell

PowerVault Data Protection Solution Support Matrix. Be sure to replace the

failed disk drive with a new disk of the same capacity. Refer to the "Disk Size

Selection and Considerations" section of the Dell PowerVault Data Protection

Solution Storage Expansion Guide for additional details.

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