HP 3PAR Cluster Extension Software Administrator Guide (5697-2047, June 2012)

If the ApplicationStartup resource property is set to FASTFAILBACK, and the
FailoverThreshold value is set to a number higher than the current number of clustered
systems for the service or application, the service or application will restart on
configured nodes until one of the following conditions is met:
• The resource is brought online in the remote data center.
• The resource failed because the FailoverThreshold value has been reached.
• The resource failed because the FailoverPeriod timeout value has been reached.
CAUTION: Disable subsequent automated failover procedures for recovery failback
operations. If you want to use HP 3PAR Cluster Extension capabilities to recover a
suspended Remote Copy volume group state during a failover, ensure that subsequent
failover operations are disabled in case the recovery attempt fails. To disable
subsequent failover attempts, set the FailoverThreshold to zero (0) until the recovery
operation has finished successfully.
Valid values FASTFAILBACK (default)
The cluster group is brought online in the remote data center (if possible) without
waiting for resynchronization. The application startup process is stopped locally and
HP 3PAR Cluster Extension reports a data center error. Depending on the cluster
software, the application service cannot start on any system in the local data center,
and the cluster software transfers the application service back to the remote data
center. Use this value to provide the highest level of application service availability.
In a two-node cluster, this process does not work because the target failback system
is not available. In this case, the application service must be started manually, or
the ApplicationStartup object must be set to RESYNCWAIT.
RESYNCWAIT
The online operation in the local cluster group must wait until the Remote Copy
volume group status is no longer in syncing state. HP 3PAR Remote Copy initiates
a resynchronization of the local virtual volume based on the remote virtual volume.
HP 3PAR Cluster Extension monitors the syncing process. If no copy progress is made
after configured ResyncWaitTimeout value, HP 3PAR Cluster Extension returns a
global error. If RESYNCWAIT has been specified for the ApplicationStartup object,
the ResyncWaitTimeout object must be specified, in case HP 3PAR Cluster Extension
should wait for resynchronization changes for more or less than 90 seconds, which
is the default.
Files application_name.forceflag
CLX_application_name.online
If specified in a user configuration file, resource_name is the value of the
APPLICATION tag; otherwise, resource_name is the value of the HP 3PAR Cluster
Extension resource name.
ClusterNotifyCheckTime
Format Integer
Description Specifies how often HP 3PAR Cluster Extension will check for VM live migration state
changes.
Default
value
10 seconds
APPLICATION objects 69