HP-UX 11i Version 1 Installation and Update Guide, June 2004

Choosing a Migration Path: Cold Install or Update
Deciding Which Method to Use
Chapter 230
• Your disk space needs to be reconfigured. See “Planning Your Disk
Space Needs” on page 83.
• Your systems are organized with clean separation of the OS from
user, application and data files.
You can cold-install from any supported HP-UX OS. (See Table 3-1,
“Supported Systems,” on page 46.)
The cold-install process using Ignite-UX is described in Chapter 5. See
“Preparing to Cold-Install Your System” on page 88 for more
information.
Update When...
You can update rather than cold-install HP-UX 11i v1 when you are
updating from HP-UX 10.20 or 11.0 as well as the following:
• You are only updating a few (1-3) systems to HP-UX 11i v1.
• You are concerned about recovering unique applications and data on
your root volume, and do not want to write over non-OS files when
installing HP-UX 11i v1.
• Each system has a unique configuration.
• Current disk space is sufficient for HP-UX 11i v1 (see “Planning Your
Disk Space Needs” on page 83).
IMPORTANT If /stand is not of sufficient size, the partition can be resized,
requiring the root disk to be reformatted. In this case, you must
cold-install rather than update your system. To determine if /stand
is large enough to support this release of HP-UX 11i v1, see “Disk
Space and Memory Requirements” on page 61.
NOTE update-ux removes all HP-UX 10.x patches from the system prior to
updating to HP-UX 11i v1. Any 10.x applications left on the system after
the update may not be supportable if they required those patches. After
migrating your system, consult the documentation for those remaining
applications for HP-UX 11i v1 requirements.