Prerequisites for disaster recovery include checking the installation path for Microsoft Exchange binaries in the Business Continuance host and the permissions configured for the machine account for the Business Continuance Cluster. There are also prerequisites specific to Windows Server 2008 and SAN Boot configuration.
- The installation path for Exchange binaries in the Business Continuance host should be the same as the Exchange installation path in the production host.
For a clustered configuration, this convention applies to all the cluster nodes.
- Ensure that the machine account for the Business Continuance Cluster is configured with full permissions on the Exchange computer object.
Use the Active Directory Users and Computers snap-in.
- Do not place any Exchange database, log files, system files, SMTP, Message Transfer Agent, or SnapInfo components in the SAN boot LUN.
- Do not place any LUN that contains Exchange database, log files, system files, SMTP, Message Transfer Agent, or SnapInfo components in a volume that contains the SAN boot LUN.
The following prerequisites are applicable only to Windows Server 2008:
- In failover clusters, the resource network name has a new property, HostNameTTL private, which is set to 20 minutes by default. Microsoft recommends having the HostNameTTL private property set five minutes for Clustered MailBox Servers, especially if they are configured for site failover.
For more information, see Microsoft Developer Network documentation.
- Ensure that the Windows Management Instrumentation (WMI) traffic is enabled in the firewall.
It is enabled by default. Some security policy templates can block WMI at the firewall level. The WMI namespace security should allow access for local administrators in all the nodes in the cluster configuration. Some security policy templates can disable this access also.
