objectives
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70-290: MCSE Guide to Managing a Microsoft Windows Server 2003 Environment, Enhanced Chapter 12: Managing and Implementing Backups and Disaster Recovery. Objectives. Plan for disaster recovery of Windows Server 2003 systems Back up and restore data Implement shadow copy volumes - PowerPoint PPT PresentationTRANSCRIPT
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70-290: MCSE Guide to Managing a Microsoft Windows Server 2003
Environment, Enhanced
Chapter 12: Managing and Implementing
Backups and Disaster Recovery
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Objectives
• Plan for disaster recovery of Windows Server 2003 systems
• Back up and restore data• Implement shadow copy volumes• Understand the purpose of the Automated System
Recovery feature
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Objectives (continued)
• Understand Windows Server 2003 advanced startup options
• Install and use the Recovery Console
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Planning for Disaster Recovery• Administrators need to be prepared for the
possibility of server failure and/or file and folder loss at all times
• Windows Server 2003 features:• The Backup utility
• Shadow Copies of Shared Volumes
• Automated System Recovery
• Advanced startup options
• The Recovery Console
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Backing Up and Restoring Data
• Backup utility designed to restore an operating system or data in case of failure
• Improved version of utility originally introduced in Windows 2000
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Backing Up and Restoring Data (continued)
• Tasks that can be performed include:• Back up and restore files and folders
• Schedule a backup
• Back up Windows 2003 System State data
• Restore the Active Directory database
• Create an Automated System Recovery (ASR) backup
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Backup and Restore Concepts
• Types of backups and backup hardware and software is dictated largely by the size and type of organization
• A key issue is backup authority:• Administrators, Backup Operators, and Server
Operators have broad authority
• Other users may have some limited authority to back up certain files and folders
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Backup and Restore Concepts (continued)
• Two main Group Policy rights are Back up files and directories and Restore files and directories
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Backup Types
• Backup types include:• Normal backup
• Incremental backup
• Differential backup
• Daily backup
• Copy backup
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Normal Backup
• Default type of backup performed by Backup utility
• Backs up all selected files and folders and clears the archive attribute on each
• This type of backup can be inefficient because it does not take into account whether files have changed
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Incremental Backup
• Backs up only files that have changed since last normal or incremental backup
• Clears the archive attributes of the files• Reduces the size of backup jobs• Restore process is more complicated
• Normal backup and incremental backups must be restored in order
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Incremental Backup (continued)
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Differential Backup
• Backs up only files that have changed since last normal or incremental backup
• Does not clear the archive attributes of those files• A second differential backup will back up the same
files since the first backup is not recorded by the archive attributes
• Reduces the size of backup jobs compared to normal backups but not incremental backups
• Restore process requires only the normal backup and the latest differential backup
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Differential Backup (continued)
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Daily Backup and Copy Backup
• Daily Backup• Backs up selected files or folders that were created or
changed on the day of the backup
• The archive attribute is not changed
• Copy Backup• Exactly the same as a normal backup but doesn’t
change the archive attribute
• Intended as a backup that will not interrupt other backup procedures (perhaps an archival copy)
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Using the Backup Utility
• Commonly used to back up critical data and operating system files
• Can be used in two modes: Wizard mode and Advanced mode
• Can be used to• Back up System State data
• Restore Active Directory
• Access Automated System Restore feature
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Using the Backup Utility (continued)
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Scheduling Backups
• Backups can be scheduled to occur without interaction from an administrator
• Can schedule backups daily, weekly, monthly, predefined times, predefined days
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Scheduling Backups (continued)
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Backing Up and Restoring System State Data
• System State data includes:• Registry (always)• COM+ Class Registration database (always)• Boot files (always)• Certificate Services database (if installed)• Active Directory (on domain controllers)• SYSVOL directory (on domain controllers)• Cluster service (if part of a cluster)• IIS Metadirectory (if IIS is installed)• System files (always)
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Backing Up and Restoring System State Data (continued)
• These components should be backed up with standard backups and directed System State backups
• Cannot back up individual components• To restore due to a corrupt Active Directory
database, must restart and choose Directory Services Restore mode advanced startup
• To restore Active Directory objects, must use authoritative restore so that replication doesn’t overwrite corrections
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Shadow Copies of Shared Folders
• Purpose of this utility is to make recovery of user files in shared folders easy without requiring an administrator
• Advantages for users:• Restoration of accidentally deleted files• Recovery of previous versions of files• Comparison of previous version to current version
• Shadow Copies not enabled by default, must be explicitly enabled from Properties of a drive
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Shadow Copies of Shared Folders (continued)
• Shadow Copies is enabled for entire volume (cannot shadow specific files or folders)
• Copies are made on a pre-defined schedule• By default, Shadow Copies uses 10% of available
disk space (minimum 100 MB)• When limit is reached, older copies are deleted
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Shadow Copies of Shared Folders (continued)
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Previous Versions
• Network users must install additional software on their systems to access previous versions of files via Shadow Copies
• Client software provided in MSI format at %systemroot%\system32\clients\twclient\X86 (for Intel-based system)
• Adds an additional tab (Previous Versions) to Properties of files stored in shared Folders
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Automated System Recovery
• This utility was introduced in Windows Server 2003• Main purpose is to restore a system to a functional state
• Allows user to restore system configuration settings, not data files
• Replaces ERD on earlier systems
• Two different elements:• ASR backup (accessed from Backup Utility)
• Floppy disk that contains information about backup, disk configuration, and how to perform a restore
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Automated System Recovery (continued)
• User data files should be backed up before ASR and restored after ASR
• ASR backup should be done whenever system configuration is changed
• ASR backup created using the Automated System Recovery Wizard
• To recover, boot from Windows CD, select Repair option, use ASR floppy and backup to restore settings
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Advanced Startup Options
• Used to troubleshoot startup problems• Provides a safe mode
• Only loads the default minimal required Windows Server 2003 settings and device drivers
• Windows Advanced Startup Options is accessed during system startup• Press F8 from Boot Loader Operating System Selection
menu
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Advanced Startup Options (continued)
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Advanced Startup Options (continued)
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Last Known Good Configuration
• Allows you to recover from failed driver and registry changes
• You should not log on to your server if problems are evident during boot process because any incorrect configuration changes will update last known good configuration
• Cannot be used to resolve problems such as missing or corrupt files
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The Recovery Console
• The Recovery Console is an advanced tool for experienced administrators
• It is used to:• Start and stop services
• Format drives
• Read and write data on a local hard drive
• Copy files from a floppy or CD to a local hard drive
• Perform administrative tasks
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Installing the Recovery Console
• Two ways to start Recovery Console:• Run it from CD after a serious error by booting from
the CD
• Install on computer permanently
• Once it is installed, it will be an option in the list of available operating systems during the initial boot process
• Recovery Console can only be run by an administrator
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Installing the Recovery Console (continued)
• Variety of commands available through Recovery Console
• Use the Help command within the Console for a complete list of commands
• Common commands include: copy, disable, enable, exit, fixboot, fixmbr, listsvc
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Activity 12-9: Installing and Using the Recovery Console
• Objective: to install and use the Recovery Console• Install the Recovery Console as directed• Restart the computer and start the Recovery
Console• Explore the command options in the Console• Run the listsvc command• Configure the RemoteAccess service• Reboot as directed
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Summary
• Administrators prepare for disaster recovery through backups and startup recovery mechanisms
• Backup utility• Normal, Incremental, Differential, Daily, and Copy
• Can back up System State
• Shadow Copies of Shared Folders gives users direct control over restoring deleted files or returning to previous versions of files
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Summary (continued)
• Automated System Recovery restores system configuration settings (not data files)
• Windows Server 2003 provides several Advanced Startup Options to troubleshoot boot problems
• Advanced Startup Options include • Safe mode
• Last Known Good Configuration
• The Recovery Console is used for system recovery