HP OpenView Storage Mirroring High Availability for Exchange Server 2000/2003 Application Notes (May 2005, T2558-88020)

Storage Mirroring High availability for Exchange Server 2000/2003 application notes 21
NOTE: A copy of this sample script (post_restore.bat.sample) is available in the Samples folder,
located in the directory where Storage Mirroring is installed. After you modify the sample script, copy the
script and save it with a new name to remove the .sample extension.
If you are upgrading from an earlier version of the Exchange Failover utility, you will need to do the
following:
• Compare the sample scripts to your failback and post-restore scripts and incorporate the new
commands (-nopublicfolders, -onlypublicfolders) into your scripts.
Modify the failover and failback scripts to remove the NSISPN commands. This functionality has been
incorporated into the utility and is no longer necessary in the scripts. Leaving the commands in the scripts
will not cause any harm or failure in execution.
Appendix 1: WAN configuration
Because failover of Exchange across a WAN is dependent on DNS and Active Directory, Exchange
availability after failover is dependent on Active Directory and DNS updates. Therefore, additional
configuration requirements and specific WAN configuration steps must be completed before the Exchange
server will be available to users.
WAN requirements
The following additional requirements must be addressed if your source and target servers are on different
subnets.
• Microsoft Exchange Server requires access to an Active Directory Domain Controller that is, at a
minimum, configured as a Global Catalog Server.
• DNS Forward and Reverse lookup zones need to be properly configured per Microsoft standards.
Protecting your WAN Exchange data
You will need to complete the same four sections as the LAN configuration in order to protect your
Exchange data. WAN-specific steps must be completed when configuring failure monitoring.
• Preparing the WAN source server—There are no unique steps when preparing a WAN source server.
Complete the same steps as outlined in ”Preparing the source server” on page 5.
• Preparing the WAN target server—There are no unique steps when preparing a WAN target server.
Complete the same steps as outlined in ”Preparing the target server” on page 6.
• Configuring Storage Mirroring mirroring and replication—There are no unique steps when configuring
Storage Mirroring mirroring or replication on the WAN source server. Complete the same steps as
outlined in ”Configuring Storage Mirroring mirroring and replication” on page 8.
• Configuring failure monitoring—Follow the steps as outlined in ”Configuring failure monitoring” on
page 9, noting three changes that need to be made when configuring failure monitoring in a WAN
environment: