Managing Serviceguard Eighteenth Edition, September 2010

D Software Upgrades
There are five types of upgrade you can do:
• rolling upgrade
• rolling upgrade using DRD
• non-rolling upgrade
• non-rolling upgrade using DRD
• migration with cold install
Each of these is discussed below.
Special Considerations for Upgrade to Serviceguard A.11.20
• Before you proceed, read the sections Upgrading from an Earlier Serviceguard Release
and Rolling Upgrade in the latest version of the release notes for A.11.20
• Serviceguard A.11.20 is supported on HP–UX 11i v3 only.
• You can perform a rolling upgrade from A.11.19 to a later release, or from an earlier
release to A.11.19, but you cannot do a rolling upgrade from a pre-A.11.19 release
to a post-A.11.19 release.
This is because A.11.19 is the only version of Serviceguard that will allow both the
older version of the cluster manager and the new version (introduced in A.11.19)
to coexist during a rolling upgrade.
If you are upgrading from a pre-A.11.19 release: Start by reading Upgrading from
an Earlier Serviceguard Release and Rolling Upgrade in the release notes. Then, if you
decide to upgrade to A.11.19 in preparation for a rolling upgrade to A.11.20,
continue with the subsection that follows; it provides information on, and
instructions for, upgrading to A.11.19.
Special Considerations for Upgrade to Serviceguard A.11.19
You can skip this section if you are already running A.11.19.
Serviceguard A.11.19 introduces a new cluster manager. In a running cluster, this affects
node timeout and failover and cluster re-formation; see the discussion of
MEMBER_TIMEOUT under “Cluster Configuration Parameters ” (page 143) for more
information. There is also a one-time effect on upgrade to Serviceguard A.11.19.
Upgrade will trigger a cluster membership transition from the old to the new cluster
manager when the last node in the cluster has been upgraded to A.11.19. This transition
can take up to one second, during which time the old cluster manager will shut down
and the new cluster manager will start.
Special Considerations for Upgrade to Serviceguard A.11.20 447