HP Serviceguard Version A.11.20 Release Notes, April 2011

Administration Utilities User’s Guide at http://www.hp.com/go/hpux-core-docs: go to the HP-UX
11i v3 collection and scroll down to Getting started.
For information about the Event Monitoring Service, see the following documents at http://
www.hp.com/go/hpux-ha-monitoring-docs —> HP Event Monitoring Service:
• Using the Event Monitoring Service
• Using High Availability Monitors
The Event Monitoring Service (EMS) and the Event Monitoring Service (EMS) Developer’s Kit are
available for download at http://www.hp.com/go/softwaredepot -> High Availability.
Other relevant HP-UX documentation includes:
• HP-UX System Administrator’s Guide at http://www.hp.com/go/hpux-core-docs.
This multi-volume manual replaces Managing Systems and Workgroups as of HP-UX 11i v3.
For information about the organization of the set, see the Preface to the Overview volume.
• The latest HP Auto Port Aggregation Release Notes and other APA documentation at http://
www.hp.com/go/hpux-networking-docs —> HP-UX 11i v3 Networking Software.
• The latest version of HP-UX VLAN Administrator's Guide and other VLAN documentation at
http://www.hp.com/go/hpux-networking-docs —> HP-UX 11i v3 Networking
Software.
Further Information
Additional information about Serviceguard and related high availability topics can be found at:
http://www.hp.com/go/softwaredepot -> High Availability
Online versions of user’s guides and white papers are available at:
http://www.hp.com/go/hpux-serviceguard-docs
Support tools and information are available from the Hewlett-Packard IT Resource Centers:
http://us-support.external.hp.com (Americas and Asia Pacific)
http://europe-support.external.hp.com (Europe)
Compatibility Information and Installation Requirements
Read this entire document (and any other Release Notes or READMEs for related products you
may have) before you begin an installation.
Compatibility
For complete compatibility information see the Serviceguard/SGeRAC/SMS/Serviceguard Manager
Plug-in Compatibility and Feature Matrix posted at http://www.hp.com/go/hpux-serviceguard-docs.
Mixed Clusters
“Mixed cluster” has several meanings in the context of Serviceguard. The following are support
statements for various types of mixed cluster.
Mixed Serviceguard Versions
You cannot mix Serviceguard versions in the same cluster; all nodes must be running the same
version of Serviceguard.
The sole exception to this rule is a rolling upgrade, during which Serviceguard versions can be
mixed temporarily, but no cluster configuration changes are allowed. See “Upgrading from an
Earlier Serviceguard Release” (page 43) , and Appendix D of Managing Serviceguard, at the
address given under “Documents for This Version” (page 34).
Further Information 35