Using Serviceguard Extension for RAC, 5th Edition, June 2007

Software Upgrades
Non-Rolling Software Upgrades
Appendix A 253
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.