4.9. Alternate disk installation
Alternate disk installation, available in AIX Version 4.3 and later versions, allows for system installation on a system while it is still up and running, which produces install or upgrade downtime to be decreased considerably. It also allows large facilities to manage an upgrade, because systems can be installed over a longer period of time, while the systems are still running at the existing version. The switch over to the new version can then happen with a simple reboot.
4.9.1. Filesets required
Alternate disk installation requires some filesets to be installed before you are able to use the alternate disk installation functions. The bos.alt_disk_install.boot_images filesets must be installed for alternate ...