Installation Methods in AIX

Three available installation methods in AIX

1. New and Complete Overwrite

2. Preservation

3. Migration

1. New and Complete Overwrite :

To build a new LPAR/Standalone server New and Complete Overwrite is only way to install the operating system.In this method if you want to install OS on existing version, it will completely overwrite the data.Take the backup before going to install OS on existing version.This is the default option when you newly installing the server.It is useful to overwrite the rootvg and resize the rootvg. Insert the CD/DVD or assign NIM resources like lpp_source and SPOT or mksysb and SPOT

How to select New and Complete Overwrite :

Insert the CD/DVD or assign NIM resources like lpp_source and SPOT or mksysb and SPOT

a). Goto to installation and Maintenance menu

b). Select 2 for Change Method of Installation

c). Select 1 for New and Complete overwrite

Change Method of Installation

Type the number of your choice and press Enter.

1 New and Complete Overwrite

Overwrites EVERYTHING on the disk selected for installation.

Warning: Only use this method if the disk is totally empty or there is nothing

on the disk you want to preserve.

2 Preservation Install

Preserves SOME of the existing data on the disk selected for installation.

Warning: This method overwrites the user (/usr), variable (/var), temporary

(/tmp), and root (/) file systems. Other product (application) files and

configuration data will be destroyed.

3 Migration Install

Upgrades the Base Operating System to current release. Other product

(application) files and configuration data are saved.

88 Help ?

99 Previous Menu

>>> Choice [1]: 1

If you want to go back to previous menu select 99.

2. Preservation :

This installation method is used to preserve user data in root volume group.It will removes data under /(root), /usr, /var and /tmp ,take the backup before going to install preservation BOS installation method.It will preserves user specified filesystems,/home and dump devices.You want to save additional files during the Preservation Installation add the entries into /etc/preserv.list.

How to select Preservation Method :

Insert the CD/DVD or assign NIM resources like lpp_source and SPOT or mksysb and SPOT

a). Goto to installation and Maintenance menu

b). Select 2 for Change Method of Installation

c). Select 2 for Preservation

Change Method of Installation

Type the number of your choice and press Enter.

1 New and Complete Overwrite

Overwrites EVERYTHING on the disk selected for installation.

Warning: Only use this method if the disk is totally empty or there is nothing

on the disk you want to preserve.

2 Preservation Install

Preserves SOME of the existing data on the disk selected for installation.

Warning: This method overwrites the user (/usr), variable (/var), temporary

(/tmp), and root (/) file systems. Other product (application) files and

configuration data will be destroyed.

3 Migration Install

Upgrades the Base Operating System to current release. Other product

(application) files and configuration data are saved.

88 Help ?

99 Previous Menu

>>> Choice [1]: 2

If you want to go back to previous menu select 99.

3. Migration :

This installation method is use to migrate server from one operating system to other operating system like from AIX5.3 to AIX6.1 or AIX7.1 .It will preserves content in root volume group,logical volumes,filesystems and system configuration files except /tmp .It clean up content under /tmp filesystem. You configured sendmail,message of the day(/etc/motd) ...etc before going to install in this method take backup of /etc/sendmail.cf , /etc/motd ..etc . If you are migrating from AIX5.3 to AIX6.1/ AIX7.1 by default option will be Migration.

How to select Migration Method:

Insert the CD/DVD or assign NIM resources like lpp_source and SPOT or mksysb and SPOT

a). Goto to installation and Maintenance menu

b). Select 2 for Change Method of Installation

c). Select 3 for Migration

Change Method of Installation

Type the number of your choice and press Enter.

1 New and Complete Overwrite

Overwrites EVERYTHING on the disk selected for installation.

Warning: Only use this method if the disk is totally empty or there is nothing

on the disk you want to preserve.

2 Preservation Install

Preserves SOME of the existing data on the disk selected for installation.

Warning: This method overwrites the user (/usr), variable (/var), temporary

(/tmp), and root (/) file systems. Other product (application) files and

configuration data will be destroyed.

3 Migration Install

Upgrades the Base Operating System to current release. Other product

(application) files and configuration data are saved.

88 Help ?

99 Previous Menu

>>> Choice [3]: 3

If you want to go back to previous menu select 99.

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