GOOD2USE Knowledge Network Disaster Recovery for Microsoft Exchange 2000 Server -Server Recovery Strategy Summary Table

PC Knowledge Base -Disaster Recovery for Microsoft Exchange 2000 Server Recovery Strategy Summary Table/CENTER>

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The following summarizes the three strategies for recovering an Exchange 2000 server from a disaster, including the advantages and disadvantages for each method.

Restoring the Server Rebuilding the Server Stand-By Recovery Server

Backup Requirements Full computer backup set
Backup of Exchange 2000 databases Windows backup set
Backups of dynamic data (data that is impossible to re-create)
Backup of Exchange 2000 databases Stand-by recovery server with identical hardware.
Windows 2000 and all other static data installed
Windows backup set
Backups of dynamic data (data that is impossible to re-create)
Backup of Exchange 2000 databases

Restore Procedures

Replace damaged hardware.
Perform a full computer restore.
Restore the Windows 2000 System State.
Restore Exchange 2000 databases.

Replace damaged hardware.
Rebuild the server.
. Restore the Windows backup set.
Restore the dynamic data.
Run Exchange 2000 Setup in Disaster Recovery mode.
Reinstall Exchange 2000 service packs in Disaster Recovery mode.
Restore Exchange 2000 databases.

Start the stand-by recovery server.
Restore the Windows backup set.
Restore the dynamic data.
Run Exchange 2000 Setup in Disaster Recovery mode.
Reinstall Exchange service packs in Disaster Recovery mode.
Restore Exchange 2000 databases.

Advantages Faster than rebuilding a server
Easier to restore data, and applications, and configuration Uses less disk space or tapes for the backups than restoring the server
Resulting operating environment is usually more stable and provides better performance Resulting operating environment is usually more stable and provides better performance
Faster than both restoring and rebuilding a server
No concern about hardware incompatibilities provided you ensure the stand-by recovery server is identical to the production server you are replacing

Disadvantages Requires more disk space or tapes for the backup. Backup jobs take longer to keep your backups current.
Backups may be incompatible if your replacement hardware is not identical.
Operating system environment, etc, may not be installed as cleanly as with other strategies. Takes longer to recover a server than it does using either of the other two strategies.
Backups may be incompatible if you replace the damaged hardware with hardware that has different specifications. Requires extra hardware that is not used until a disaster.
Does not totally eliminate the risk of hardware incompatibility with your backups. Perform a test restore to ensure your backups are compatible with the hardware on your stand-by recovery server.

Backup and Recovery methods

The information in this article applies to:

Microsoft Exchange Server 2003 Enterprise Edition
Microsoft Exchange Server 2003 Standard Edition
Microsoft Windows Small Business Server 2003, Premium Edition
Microsoft Windows Small Business Server 2003, Standard Edition
Microsoft Exchange 2000 Server

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	Restoring the Server	Rebuilding the Server	Stand-By Recovery Server
Backup Requirements	Full computer backup set Backup of Exchange 2000 databases	Windows backup set Backups of dynamic data (data that is impossible to re-create) Backup of Exchange 2000 databases	Stand-by recovery server with identical hardware. Windows 2000 and all other static data installed Windows backup set Backups of dynamic data (data that is impossible to re-create) Backup of Exchange 2000 databases
Restore Procedures	Replace damaged hardware. Perform a full computer restore. Restore the Windows 2000 System State. Restore Exchange 2000 databases.	Replace damaged hardware. Rebuild the server. . Restore the Windows backup set. Restore the dynamic data. Run Exchange 2000 Setup in Disaster Recovery mode. Reinstall Exchange 2000 service packs in Disaster Recovery mode. Restore Exchange 2000 databases.	Start the stand-by recovery server. Restore the Windows backup set. Restore the dynamic data. Run Exchange 2000 Setup in Disaster Recovery mode. Reinstall Exchange service packs in Disaster Recovery mode. Restore Exchange 2000 databases.
Advantages	Faster than rebuilding a server Easier to restore data, and applications, and configuration	Uses less disk space or tapes for the backups than restoring the server Resulting operating environment is usually more stable and provides better performance	Resulting operating environment is usually more stable and provides better performance Faster than both restoring and rebuilding a server No concern about hardware incompatibilities provided you ensure the stand-by recovery server is identical to the production server you are replacing
Disadvantages	Requires more disk space or tapes for the backup. Backup jobs take longer to keep your backups current. Backups may be incompatible if your replacement hardware is not identical. Operating system environment, etc, may not be installed as cleanly as with other strategies.	Takes longer to recover a server than it does using either of the other two strategies. Backups may be incompatible if you replace the damaged hardware with hardware that has different specifications.	Requires extra hardware that is not used until a disaster. Does not totally eliminate the risk of hardware incompatibility with your backups. Perform a test restore to ensure your backups are compatible with the hardware on your stand-by recovery server.