AIX Installation Methods

OS INSTALLATION:

Three kinds of OS installations available in AIX

1. New and Complete Overwrite
2. Migration
3. Preservation


1. New and Complete Overwrite:

This is New installation; in this installation we have three options

A. Start installation with default settings
B. Change/show installation settings and install
C. Start maintenance mode for recovery

A. Start installation with default settings

This is normal installation

B. Change/show installation settings and install

In this installation we can change the installation disk (hdisk0, or hdisk1), Desktop options.

C. Start maintenance mode for recovery

This is used for recover the existing OS problems. (Boot image, Boot list, File systems problems).


2. Migration:

In this migration Installation, Operating system Updated from lower level to higher level i.e. Aix 5.1 To Aix 5.3 or Aix 5.2 To Aix 5.3 ,

NOTE:

In this installation System data will not be affected except the /tmp file system. i.e. /tmp file system will be deleted and newly created.


3. Preservation:

This installation is overwriting the existing OS and user data directory /home only persevered, rest of the directories /, /var, /tmp, /etc, /dev, /opt will be deleted and newly created.

NOTE:

In this installation we can preserve additional directories also, suppose if you want preserve /opt, this case u should put /opt file system entry in /etc/preserve.list file.