HP Serviceguard Version A.11.20 Release Notes, August 2011

Upgrade will trigger a cluster membership transition from the old to the new cluster manager when
the last node in the cluster has rolled 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.
CAUTION: From the time when the old cluster manager is shut down until the new cluster manager
forms its first cluster, a node failure will cause the entire cluster to fail. HP strongly recommends
that you use no Serviceguard commands other than cmviewcl (1m) until the new cluster manager
successfully completes its first cluster re-formation. See the section “Special Considerations for
Upgrade to Serviceguard A.11.19” in Appendix D of the latest version of Managing Serviceguard
for more information.
For further caveats that apply to specific upgrade paths make sure you read the following sections
in these Release Notes: “Compatibility Information and Installation Requirements” (page 34) and
“Upgrading from an Earlier Serviceguard Release” (page 41).
Quorum Server Upgrade Required if You Are Using an Alternate Address
If you are using an alternate address on a Serviceguard version earlier than A.11.19, you must
upgrade the Quorum Server to version A.04.00 before you upgrade the cluster. See About the
Alternate Quorum Server Subnet (page 29) for more information.
CAUTION: If you fail to do this, the upgraded cluster will be running without a cluster lock until
you have upgraded the Quorum Server.
Serviceguard Manager Available from the System Management Homepage (SMH)
For details, see “Serviceguard Manager” (page 24).
NOTE: The earlier, station-management version of Serviceguard Manager is obsolete (as of
Serviceguard A.11.18). The last version of Serviceguard that supports that product is A.11.17
(A.11.17.01 on HP-UX 11i v3).
Support for Mixed-OS Clusters (HP–UX 11i v2 and 11i v3)
With some limitations, HP now supports Serviceguard clusters in which some nodes are running
HP-UX 11i v2 and some 11i v3. You may want to take advantage of this if you are currently running
Serviceguard A.11.19 on HP-UX 11i v2 and want to upgrade the nodes to 11i v3 over a period
of time, in preparation for upgrading to Serviceguard A.11.20.
IMPORTANT: The cluster must be running Serviceguard A.11.19. Serviceguard A.11.20 does
not run on HP–UX 11i v2.
For more information, see “Mixed Clusters” (page 34).
Support for Veritas Products from Symantec
For the most up-to-date information, check the HP Serviceguard/SGeRAC/Serviceguard Storage
Management Suite/Serviceguard Manager Plug-in Compatibility and Feature Matrix, at the address
given under “Compatibility Information and Installation Requirements” (page 34).
Version 4.1, 4.2, or 4.3 of HPVM Required
If you intend to use HP Integrity Virtual Machines (HPVM) with Serviceguard A.11.20, you must
install or upgrade to HPVM 4.1 or 4.2. HPVM 4.3 is supported with Serviceguard A.11.20 April
2011 patches and later. See “Support for HP Integrity Virtual Machines (HPVM)” (page 31) for
more information about HPVM. See also “About cmappmgr” (page 29).
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