HP Storage Mirroring Software - Manual (Page 220)

Workload protection Page 219 of 677
Configuring failover processing
1. Make sure you have a valid domain and servers specified, click Configure from
the main Application Manager page, and then select the Failover tab.
Note: The fields on the Failover tab will vary depending on the type of application
you are protecting.
2. Specify the Failover Type which is the name resolution method that will be used
to redirect users to the target in the event the source fails. Ideally, you should use
DNS failover to reduce downtime and avoid server name or IP address conflicts.
However, you may want to select identity failover if access to the domain controller
or DNS server is not available, the time required to propogate DNS updates is
unacceptable, or your end-users are configured to connect to an IP address and
not a server name. For cluster environments, DNS failover is the only option
available.
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DNS Failover—With DNS failover, DNS records associated with the source
will be updated to point to the target's IP address. This includes A, MX, and
PTR-type DNS records. Clients will resolve the source server name to the
target server's name and IP address at failover. Click Configure to specify
the
DNS failover settings .
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Identity Failover—With identity failover, the target will assume the source
server's name and IP address. This option can potentially cause name and/or
IP address conflicts if the source is brought back online while the target is
standing in. Click Configure to specify the
identity failover settings .
Note: If you select identity failover, you will not be using the Application
Manager for failover, failback, or restoration. You must manually
complete
failover and failback and restoration .