HP StorageWorks XP Cluster Extension Software Administrator Guide (T1656-96035, April 2010)

9. Specify the resource groups configured to run with XP Cluster Extension.
10. Once the resource groups have been specified, press Enter to complete the configuration process.
XP Cluster Extension controls the disk pairs based on XP RAID Manager device groups. The volume
group definition of the HACMP resource group is used to determine the corresponding XP RAID
Manager device group. The mapping of the HACMP volume group configuration and the corresponding
XP RAID Manager device group is done by the XP Cluster Extension user configuration file /etc/
opt/hpclx/conf/UCF.cfg. Because of this mapping mechanism, you must specify the volume
groups owned by the HACMP resource groups in the user configuration file.
User configuration file for HACMP
Before configuring the objects in the user configuration file, review the XP Cluster Extension objects
described in Chapter 8 on page 123.
• Set the ApplicationStartup object to RESYNCWAIT, because HACMP does not offer the feature for
disabling resource groups on a particular system to move the resource group back to the most
current copy of your data. If the ApplicationStartup object is set to FASTFAILBACK (default), the
resource group will fail to be brought online in cases where the most current copy of your data
resides in the disk array on the remote site. If you set the ApplicationStartup object to FASTFAIL-
BACK, you must stop the resource group online process and either resynchronize your disk from
the remote site or manually bring your resource group online at the remote site.
• The Vgs object in the user configuration file is used to map the volume groups of the HACMP re-
source group to the corresponding APPLICATION object within the user configuration file. The
DeviceGroup object within each APPLICATION section determines the XP RAID Manager device
group needed to control all the shared disks of the HACMP resource group.
Configuring XP Cluster Extension for AIX28