HP StorageWorks EVA Cluster Extension Software Administrator Guide (T3667-96045, April 2010)

Description Specifies the directory where EVA Cluster Extension searches for application-spe-
cific files, such as the force flag or online file.
If ApplicationDir is set to a nonexistent drive, EVA Cluster Extension is unable to
create the online file and cannot bring the resource online.
Windows
If ApplicationDir is not set, EVA Cluster Extension uses the local %HP-
CLX_EVA_PATH% values as defined in the registry.
Default values Linux
online file: /etc/opt/hpclxeva
force flag file: /etc/opt/hpclxeva/conf
Windows
%HPCLX_EVA_PATH%
Files resource_name.forceflag
resource_name.online
If specified in a user configuration file, resource_name is the value of the APPLIC-
ATION tag; otherwise, resource_name is the value of the EVA Cluster Extension
resource name.
ApplicationStartup (Optional)
Format String
Description Specifies where a cluster group should be brought online.
The ApplicationStartup object can be customized to determine whether an applic-
ation service starts locally or is transferred back to the remote data center (if pos-
sible) 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 DR group (the DR group has
not been recovered and is not in a normal state). This process is considered a
failback attempt without prior DR group recovery.
EVA Cluster Extension can detect the most current copy of your data based on the
DR group information. If EVA Cluster Extension detects that the remote EVA storage
system 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 EVA storage system.
If a resynchronization is ordered, EVA Cluster Extension monitors the progress of
the copy process. If the application service was running on a secondary EVA storage
system 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.
MSCS
If the ApplicationStartup resource property is set to FASTFAILBACK, and the Fail-
overThreshold 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.
User configuration file and EVA Cluster Extension objects78