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Computer Associates BABWBR1151S40 User Guide - Page 116

Online Backup Use, Media Integrity, Database Level Backup Strategies

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Backup Recommendations Online Backup Use Always perform online backups. This lets you back up Exchange Server databases without shutting them down and losing work time. If you do not perform online backups, not only do you lose valuable work time, but you also run the risk of making costly errors since offline backups are detailed and labor-intensive. When you perform online backups, the agent manages files for you. When you perform offline backups, you must do all of the work yourself. In addition, if you perform offline backups, there is no process for validating the checksum on each page of the database so you cannot detect corruptions and check the integrity of the database. Media Integrity Use the global option Calculate and Store CRC Value on Backup Media when creating your backup job. Afterwards, scan your media with CRC verification to ensure the media integrity. Database Level Backup Strategies There are many factors that contribute to your backup strategy--backup window size, restore window size, server and storage hardware, the amount of available media, media retention time, network bandwidth, server load, and the size of your databases. Consequently, the backup strategy that you should use depends on your environment and physical hardware. When determining a backup strategy, you must first assess the amount of time your organization has available each week for backing up your Exchange Server. When doing so, remember that the most time-consuming aspect of performing a restore is replaying the log files. Depending on how often you perform full backups, it can take several hours to replay log files on large servers during a restore because every transaction that has occurred since the last backup must be scanned. In addition, the speed at which transaction log replay occurs varies, depending on the type of transactions that must be replayed. Perform a test restore of your log files to get a more accurate estimate of how long it will take. 116 Agent for Microsoft Exchange Guide

Section	Page
CA ARCserve Backup for Windows Agent for Microsoft Exchange Guide	1
Contents	7
1: Introducing the Agent	11
Introduction	11
Microsoft Exchange Server Description	11
How to Protect Different Parts of Your Exchange Server Organization	12
How Microsoft Exchange Server Organization Hierarchy Works	12
How Single Instance Storage Works	13
How the Agent Backs Up and Restores Exchange Server Data	14
How You Can Use the Agent to Perform Database Level Backups and Restores	15
How You Can Use the Agent to Perform Document Level Backups and Restores	16
Backup and Restore Limitations on Exchange Server Data	17
How the Agent Communicates With CA ARCserve Backup	17
2: Installing the Agent	19
System Requirements	19
Installation Prerequisites	19
Install the Agent for Microsoft Exchange	20
Post-installation Tasks	20
Configure the Agent for Database Level Backup and Restore	20
Configure the Agent for Document Level Backup and Restore	22
Create or Verify a Brick Level Account	26
Configure the Agent to Run on a Cluster	29
Remote Server Views in the Backup Manager	30
Exchange Organization View	31
Add Remote Servers to the Systems Object	32
3: Performing Database Level Backups and Restores	33
How Database Level Backup Works	33
Database Level Backup and Restore Benefits	33
Database Level Backup and Restore for Exchange Server 2000 and 2003	34
Database Level Views in the Backup Manager	34
Backup Agent Service Account Requirements for Database Level Backup and Restore	35
Database Level Backup Features	36
Database Level Data Restore	41
Database Level Disaster Recovery	50
Database Level Backup and Restore for Exchange Server 2007	51
Database Level Views in the Backup Manager	51
Backup Agent Service Account Requirements for Database Level Backup and Restore	52
Microsoft VSS Writer Requirements	52
Database Level Backup Features	52
Database Level Data Restore	58
4: Performing Document Level Backups and Restores	77
How Document Level Backup Works	77
Document Level Backup and Restore Benefits	78
Document Level Views in the Backup Manager	79
Backup Agent Service Account Requirements for Document Level Backup and Restore	81
Document Level Backup Features	82
Complete Messaging Single Instance Storage	82
Browsing Filter	82
Document Level Backup Methods	83
Specify Document Level Backup Filters	85
Multiplexing During Document Level Backups	86
Multi Stream Option	87
Perform a Document Level Backup	87
Activity Log Messages	90
Document Level Data Restore	91
Document Level Restore Sets	91
Document Level Restore Prerequisites	92
Configure Document Level Restore Options	92
Document Level Restore Locations	94
Perform a Document Level Restore	102
How to Perform Brick Level Restores on Exchange 2000 and Exchange 2003 Systems	103
Backup Agent Service Account Requirements for Brick Level Restore	104
Brick Level Data Restore	105
Brick Level Restore Prerequisites	105
Brick Level Restore Sets	105
Brick Level Restore Options	106
Perform a Brick Level Data Restore	107
5: Using Functions Supported on Exchange Server 2000, 2003, and 2007 Systems	109
Introduction	109
Multiplexing Backup Data	109
Multistreaming Backup Options	110
Encrypt and Compress Backup Data	110
How to Manage Media Containing Exchange Server Backup Data	111
Scan Media	112
6: Using Best Practices	113
General Recommendations	113
Technical Resources	113
Logs in the Event Viewer	113
Installation Recommendations	113
Product Recommendations	114
Load Reduction	115
Exchange Server Configuration Recommendations	115
Circular Logging	115
Transaction Log Space	115
Backup Recommendations	115
Online Backup Use	116
Media Integrity	116
Database Level Backup Strategies	116
Document Level Backup Strategies	118
Document Level Backup and Restore Performance Tuning	118
Restore Recommendations	120
General Restore Strategies	120
Document Level Restore Strategies	120
Backup and Restore Test Strategies	120
A: Troubleshooting	123
Activity Log	123
Exchange Server Errors	123
Exchange Agent Does Not Display When You Browse the Server	123
Unable to Create the User Account, Create the Mailbox, or Finalize the Mailbox	124
Authentication Errors Occur when Configuring the Brick Level Agent	125
VSS Errors Occur on Windows Server 2008 Systems	128
Information for Customer Support	129
B: Setting Up a Backup Agent Service Account	131
How to Set Up Your Backup Agent Service Account	131
Backup Agent Service Account Requirements Overview	132
Task Requirements	132
Implementation Considerations	132
Set Up Your Backup Agent Service Account	133
Create a Domain User on a Windows 2000 and 2003 Server	133
Create a Mailbox for Exchange 2000 and Exchange 2003 Server	135
Create a Domain User with a Mailbox for Exchange Server 2007	137
Set Up Groups	139
Add Groups for all Versions of Exchange Server on a Windows Member Server	139
Add Groups for all Versions of Exchange Server on a Domain Controller	140
Delegate Roles	141
Delegate Roles for Exchange Server 2000 and 2003 on a Domain Controller or Member Server	141
Delegate Roles for Exchange Server 2007 on a Domain Controller or Member Server	143
Additional Configuration Considerations	144
Member Server Considerations	145
Multiple Domain Considerations	145
Grant Additional Rights on Exchange 2000 Server	145
C: Frequently Asked Questions	147
General Questions	147
Database Level Backup and Restore Questions	147
Document Level Backup and Restore Questions	148
D: Registering Cluster Resources	151
Register the Cluster Resources Manually	151
E: Using the Server Configuration Worksheet - Exchange Server 2000 and 2003 Systems	155
Worksheet	156

Match case Limit results 1 per page

Backup Recommendations

Online Backup Use

Always perform online backups. This lets you back up Exchange Server

databases without shutting them down and losing work time. If you do not

perform online backups, not only do you lose valuable work time, but you also

run the risk of making costly errors since offline backups are detailed and

labor-intensive. When you perform online backups, the agent manages files for

you. When you perform offline backups, you must do all of the work yourself.

In addition, if you perform offline backups, there is no process for validating

the checksum on each page of the database so you cannot detect corruptions

and check the integrity of the database.

Media Integrity

Use the global option Calculate and Store CRC Value on Backup Media when

creating your backup job. Afterwards, scan your media with CRC verification to

ensure the media integrity.

Database Level Backup Strategies

There are many factors that contribute to your backup strategy--backup

window size, restore window size, server and storage hardware, the amount of

available media, media retention time, network bandwidth, server load, and

the size of your databases. Consequently, the backup strategy that you should

use depends on your environment and physical hardware.

When determining a backup strategy, you must first assess the amount of time

your organization has available each week for backing up your Exchange

Server. When doing so, remember that the most time-consuming aspect of

performing a restore is replaying the log files. Depending on how often you

perform full backups, it can take several hours to replay log files on large

servers during a restore because every transaction that has occurred since the

last backup must be scanned. In addition, the speed at which transaction log

replay occurs varies, depending on the type of transactions that must be

replayed. Perform a test restore of your log files to get a more accurate

estimate of how long it will take.

116

Agent for Microsoft Exchange Guide