HP Serviceguard Version A.11.19 Release Notes, October 2009

See the section “Serviceguard Daemons” in Chapter 3 of the latest edition Managing
Serviceguard for more information about these daemons.
• A new cluster parameter, NETWORK_AUTO_FAILBACK, tells Serviceguard how
to handle the recovery of the primary LAN interface after it has failed over to the
standby interface because of a link level failure. See the description of this parameter
under “Cluster Configuration Parameters” in Chapter 4 of Managing Serviceguard.
• A new parameter, CONFIGURED_IO_TIMEOUT_EXTENSION, must be set for
extended-distance clusters using software mirroring across data centers over links
between iFCP switches. This parameter is supported only with iFCP switches that
allow you to get their R_A_TOV value, and must be set to the maximum R_A_TOV
value.
Serviceguard on HP-UX 11i v3
Serviceguard support for HP-UX 11i v3 was first introduced in Serviceguard version
A.11.17.01. The following is a list of the most important capabilities that are available
only on 11i v3.
• Serviceguard A.11.19 on HP-UX 11i v3 supports HP-UX agile addressing,
sometimes also called persistent LUN binding, for device special files (DSFs).
See “About Device Special Files (DSFs)” (page 47).
• Serviceguard A.11.19 on HP-UX 11i v3 supports HP-UX native multipathing and
load balancing.
See “Native Multipathing, Veritas DMP, and Related Features in HP-UX 11i v3”
(page 18).
• There are new networking capabilities:
— The HP-UX olrad -C command now identifies network interface cards (NICs)
that are part of the Serviceguard cluster configuration.
You can remove a NIC from the cluster configuration, and then from the system,
without bringing down the cluster. See “About olrad” (page 46).
— Serviceguard now also supports the LAN Monitor mode of APA.
• Serviceguard supports Process IDs (PIDs) of any size, up to the maximum value
supported by HP-UX and the node’s underlying hardware architecture.
Previous versions of HP-UX imposed a limit of 30,000; this limit has been removed
as of HP-UX 11i v3. For more information, see the white paper Number of Processes
and Process ID Values on HP-UX on docs.hp.com.
• Serviceguard A.11.19 supports the increased number of LVM volume groups
supported as of the HP-UX 11i v3 0809 Fusion release; the maximum number of
volume groups you can configure in a Serviceguard cluster is the maximum
supported by HP-UX. See the HP-UX documentation for details.
22 Serviceguard Version A.11.19 Release Notes