Users Guide

80 Installing Management Station Software
System Recovery on Failed Installation
If a software installation utility encounters a fatal error during setup, your
system may become unstable. To address this problem, Dell OpenManage
installers provide the ability to roll back, or return, the system to its
fully-working condition prior to the failed installation.
The Windows Installer service provides Dell OpenManage installers the ability
to roll back by maintaining an undo operation for every operation that it
performs during an installation, uninstallation, or any other configuration
change. If some aspect of the installation fails during an installation session,
the Windows Installer service can precisely return the system to its previous
stable state. This feature includes restoration of deleted or overwritten files,
registry keys, and other resources. Files that are deleted or overwritten during
the course of an installation or removal are temporarily saved to a backup
location, so they can be restored if necessary. After an installation finishes
successfully, all temporary backup files are deleted.
An installation cannot be rolled back once it has successfully completed.
A transacted installation is intended as a safety net that protects the system
during a given installation session. If you want to remove an installed
application, for example, you should uninstall that application.
When upgrading from Dell OpenManage software version 4.3 to version 5.x,
an error will roll back the system to its previous state.
NOTE: Installations, uninstallations, and upgrades canceled by the administrator
during installer cleanup or after the installation transaction is completed will not be
rolled back.
Performing an Unattended Installation of Management Station Software
The management station installer provides a Typical Setup option and a
Custom Setup option for the unattended installation procedure.
Unattended installation allows you to install management station Software
simultaneously on multiple systems. You can perform an unattended
installation by creating an unattended installation package that contains all of
the necessary management station files. The unattended installation option
also provides several features that enable you to configure, verify, and view
information about unattended installations.