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.
Thanks for reading this Post