Administrator's Guide

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
ClusterNotifyWaitTime
Format Integer
Description Specifies the amount of time that HP 3PAR Cluster Extension will monitor for VM live
migration state changes.
Default
value
5 seconds
DC_A_Hosts (Required)
Format List
Description This space-separated list defines the cluster nodes in data center A.
DC_B_Hosts (Required)
Format List
Description This space-separated list defines the cluster nodes in data center B.
APPLICATION objects 51