Using Serviceguard Extension for RAC, 4th Edition, February 2007

Serviceguard Configuration for Oracle 10g RAC
Support for HP-UX 11i v3
Chapter 250
Support for HP-UX 11i v3
This release of SGeRAC version A.11.17.01 supports HP-UX version 11i
v3, and introduces important differences and improvements, particularly
in regard to the I/O subsystem, The following sections describe the
primary updates for SGeRAC version A.11.17.01 on HP-UX 11i v3.
NOTE Refer to the Managing Serviceguard Thirteenth Edition user’s guide and
Serviceguard Version A.11.17 on HP-UX 11i v3 Release Notes for
Serviceguard version A.11.17.01 requirements and configurations.
Veritas CVM and CFS Not Yet Supported
Serviceguard Extension for RAC version A.11.17 on HP-UX 11i v3 does
not yet support Cluster Volume Manager (CVM) and Cluster File System
(CFS) from Symantec.
If your Serviceguard cluster needs this functionality, do not upgrade to
HP-UX 11i v3; Serviceguard A.11.17 is also available on HP-UX 11i v2,
which supports the latest versions of CVM and CFS. (on HP-UX releases
that support them; see “About Veritas CFS and CVM” on page 22)
Native Multipathing, Veritas DMP and Related
Features
The HP-UX 11i v3 I/O subsystem provides multipathing and load
balancing by default. This is often referred to as native multipathing. 4.1
and earlier versions of Veritas Volume Manager (VxVM) and Dynamic
Multipathing (DMP) from Symantec are supported on HP-UX 11i v3, but
do not provide multipathing and load balancing; DMP acts as a
pass-through driver, allowing multipathing and load balancing to be
controlled by the HP-UX I/O subsystem instead.
When you upgrade to a system to HP-UX 11i v3, the I/O subsystem will
start performing load balancing and multipathing for all multipath
devices (whether or not they are managed by VxVM/DMP); you do not
have to take any additional steps to make this happen. For additional
information on Multipathing; See “Multipath” on page 38.