Dell PowerVault Series User manual

www.dell.com | support.dell.com
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.
© 2008 Dell Inc. All rights reserved.
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
or
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
X7
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.