HP-UX 11i v3 Installation and Update Guide, September 2009 (Update 5 Release)

Choosing cold-install or update
Now that you have evaluated your system and ordered any needed hardware, you
need to decide whether to cold-install or update to HP-UX 11i v3 on your system.
When to cold-install
NOTE: If you have ordered a new system with the Instant Ignition option (also known
as factory integrated), the cold-installation process described here has already been
performed. You can skip this section.
Cold-install means installing system software on a new (uninstalled) or existing system
by completely rebuilding the root volume group, erasing the existing operating system
and data on that volume, and installing the new operating system and specified software
and data.
CAUTION: The cold-install process erases software on the root volume before
installing. If you want to retain any existing software, make sure to back up that software
before migrating or use update. Cold-installing using Ignite-UX overwrites everything
on the target volume.
You can cold-install rather than update to HP-UX 11i v3 when:
• You have a new system.
• You are managing several systems with similar OS configurations.
• Your disk space needs reconfiguration. See “Determining disk space requirements”
(page 12).
• Your systems are organized with clean separation of the OS from user, application,
and data files.
• Overwriting the root (/) volume on existing systems will not cause a loss of
applications or data.
• Your system configuration is not listed as a supported update path. See “Supported
update paths” (page 21).
An advantage of cold-install is that supported software can be installed without regard
for the software currently on the system, or concern for cleaning up old software.
You can cold-install on any supported system. See “Supported systems” (page 12).
For information about choosing installation and update sources, see “Choosing an
installation source” (page 22).
See Chapter 4: “Before you begin” (page 25) for more information about preparing
your system for cold-install. Then read the cold-install process using Ignite-UX in
Chapter 5: “Cold-installing HP-UX 11i v3 from local media” (page 41).
20 Choosing your installation methods