HP-UX System Administrator's Guide: Routine Management Tasks

Serviceguard Advanced Tape Services (ATS)
You can use shared tape devices in an Serviceguard cluster allowing high availability
backups using tape libraries and tools such as Omniback. The ATS facility allows a
two-node to four-node cluster to share standalone magnetic tape devices and/or tape
library robotic devices. As a result, even after a package fails on one node, a backup of
the package data continues or restarts on an alternate node. Device files corresponding
to each tape or library robotic mechanism are created and written to an ATS ASCII
configuration file. ATS uses this file to keep track of the devices configured in the
cluster.
HP Reference
Using Advanced Tape Services
Other High Availability Products and Features
Dynamic Root Disk
Dynamic Root Disk is an HP-UX system administration tool set used to clone an HP-UX
system image to a disk other than that from which the system is currently booted, for
puroses of software maintenance and recovery. In this way, you can install software
and patches to a clone of your current system without affecting the running system. Then,
when an opportunity to reboot the system is available, the patched or updated clone
can be booted. This reduces system downtime to just the time it takes to reboot to the
clone. Also, if necessary, the changes can be quickly backed out by simply rebooting
to the original clone.
High Availability Monitors
High availability monitors allow you to check up on your system’s resources and to
be informed if problems develop. They can be used in conjunction with Serviceguard.
Monitors are available for disk resources, cluster resources, network interfaces, system
resources, and database resources. When a monitor detects a problem, an alert is sent,
allowing an operator or administrator to correct the problem.
HP Reference
Using High Availability Monitors
Enterprise Cluster Master Toolkit
The Enterprise Cluster Master Toolkit is a set of templates and scripts that allow you
to configure ServiceGuard packages for the HP Domain Internet servers as well as for
212 Using High Availability Strategies