HP XP Cluster Extension Software Administrator Guide

Files resource_name.createsplitbrain
resource_name.forceflag
resource_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 XP Cluster
Extension resource name.
ApplicationStartup
Format String
Description (Optional) Specifies where a cluster group should be brought online.
The ApplicationStartup object can be customized to determine whether an application
service starts locally or is transferred back to the remote data center (if possible) to
start immediately without waiting for resynchronization. This object is used only if
an application service has already been transferred to the secondary site and no
recovery procedure has been applied to the disk set (the disk pair has not been
recovered and is not in PAIR state). This process is considered a failback attempt
without prior disk pair recovery.
XP Cluster Extension can detect the most current copy of your data based on the
disk state information. If XP Cluster Extension detects that the remote disk array has
the most current data, it orders a resynchronization of the local disk from the remote
disk, or it stops the startup process to enable the cluster software to fail back to the
remote disk array.
If a resynchronization is ordered, XP Cluster Extension monitors the progress of the
copy process. If the application service was running on a secondary disk array
without a replication link, a large number of records may need to be copied. If the
copy process takes longer than the configured application startup timeout value, the
application startup will fail.
MSFC
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.
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
XP 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. Depending
on the value configured for the AutoRecover object, XP Cluster Extension attempts
to update the former primary disk based on the secondary disk and swaps the
personalities of the disk pair so that the local disk will become the primary disk.
APPLICATION objects 51