HP Serviceguard Version A.11.19 Release Notes, July 2009

NOTE: HP-UX version in this context means major release, such as 11i v2. It
is acceptable to have a mix of different HP-UX Fusion releases for the same
major revision (for example, 11i v2 September 2004 and 11i v2 September 2006),
although it is generally best to have all nodes running the same Fusion release.
A mix of HP-UX 11i v2 and 11i v3 nodes is also allowed, but entails some
restrictions; see “Mixed HP-UX Operating-System Revisions” (page 50).
— The same version of Serviceguard
— The same version of any volume manager or file system that is independent
of HP-UX
and in addition, HP strongly recommends that all nodes be running:
— The same patch level for LVM and SLVM
— The same patch level for HP-UX, Serviceguard, and volume managers and
related subsystems (for example Veritas VxVM, and VxFS)
• All applications running in the cluster must adhere to the vendor’s requirements
for mixed Integrity and HP 9000 environments.
• The cluster cannot use Oracle RAC. (SGeRAC is not supported in a
mixed-hardware-architecture cluster because Oracle RAC does not support mixing
hardware architectures within a single RAC cluster.)
For more information about mixed-hardware-architecture clusters, see Configuration
Rules for a Mixed HP 9000 /Integrity Serviceguard Cluster at http://www.docs.hp.com
-> High Availability -> Serviceguard —> White Papers.
Mixed HP-UX Operating-System Revisions
Before A.11.18, Serviceguard required all nodes in a cluster to be running the same
HP-UX revision, except during a rolling upgrade. As of Serviceguard A.11.18 a cluster
can contain a mix of nodes running HP-UX 11i v2 and 11i v3, with certain restrictions.
Future versions of Serviceguard may or may not support such a mix of HP-UX 11i v2
and 11i v3 nodes.
For the purposes of this discussion we'll identify three broad cases: homogeneous
clusters, clusters in transition, and heterogeneous clusters.
50 Serviceguard Version A.11.19 Release Notes