New In Hacmp 4.4 - IBM RS/6000 SP Handbook

The cluster configuration can be expanded or modified without service
disruption through Dynamic Reconfiguration options. Version Compatibility
and Dynamic Reconfiguration eliminate the most common causes of
scheduled cluster down time.
Concurrent processing
With the HACMP Concurrent Resource Manager (CRM) feature option, data
can be processed concurrently when using Oracle Parallel Server (OPS)
Version 7.3 or 8. The combination of CRM and OPS offers an additional level
of high availability. With CRM and OPS, all servers in the cluster share the
data and system resources; if one or more servers should fail, the remaining
servers continue processing with minimal disruption, if any, since no fail over
is required.
For more detailed information see RS/6000 Systems Handbook, SG24-5120 or
Exploiting HACMP 4.4: Enhancing the Capabilities of Multi-Processing,
SG24-5979.

9.6.3 New in HACMP 4.4

HACMP 4.4 was announced to the public on June 20, 2000 and includes the
following enhancements:
Application Monitoring (ES and ESCRM only) provides Process Application
monitoring and User-defined Application monitoring to determine the state of
an application and to restart the application or fall the resource group over to
another node.
Tivoli Cluster Monitoring allows users to monitor the state of an HACMP
cluster and its components on a Tivoli Desktop window.
Cascading without Fallback permits specifying that the resource group not
return to the original node when that node rejoins the cluster.
Cluster Verification is enhanced to detect additional startup of failover
problems.
New Performance Tuning Parameters provide easier and more granular
control.
New documentation provides guidance for setting up, monitoring, and
managing 7 x 24 clusters.
Enhanced LVM Task Guide now provides a display of the physical location of
each available disk and will create automatically a JFS log file.
NFS Migration (HAS only) provides for migration between HACMP 4.3.1
HANFS feature and HACMP 4.4 HAS feature. HANFS is no longer included
as a feature of HACMP.
Chapter 9. Software support
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