Using Serviceguard Extension for RAC, 6th Edition, April 2008

Migrating a SGeRAC Cluster with Cold Install
There may be circumstances when you prefer a cold install of the HP-UX operating
system rather than an upgrade. The cold install process erases the pre-existing operating
system and data and then installs the new operating system and software; you must
then restore the data.
CAUTION: The cold install process erases the pre-existing software, operating system,
and data. If you want to retain any existing software, make sure to back up that software
before migrating.
Use the following process as a checklist to prepare the migration:
1. Back up the required data, including databases, user and application data, volume
group configurations, etc.
2. Halt cluster applications, including RAC and then halt the cluster.
3. Do a cold install of the HP-UX operating system. For more information on the cold
install process, see the HP-UX Installation and Update Guide located at
http://docs.hp.com -> By OS Release -> Installing and Updating
4. Install additional required software that did not come with your version of HP-UX
OE.
5. Install a Serviceguard/SGeRAC version that is compatible with the new HP-UX
operating system version. For more information on support, compatibility, and
features for SGeRAC, refer to the Serviceguard Compatibility and Feature Matrix,
located at http://docs.hp.com -> High Availability -> Serviceguard Extension
for RAC
6. Recreate any user accounts needed for the cluster applications.
7. Recreate the network and storage configurations (that is, set up stationary IP
addresses and create LVM volume groups and/or CVM disk groups required for
the cluster).
8. Recreate the SGeRAC cluster.
9. Restart the cluster.
10. Reinstall the cluster applications, such as RAC.
11. Restore the data.
Non-Rolling Software Upgrades 177