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Chapter 2 Installing Bundled Software
1.5
Active Upgrade
Active Upgrade technology allows you to upgrade system and application software on an Express5800/ft series
system with minimal downtime.
This section describes the overview of Active Upgrade process, the procedure and prerequisites necessary for
preparing the system for the upgrade process, and configuring and performing the upgrade process with Active
Upgrade Console.
1.5.1 Overview
Active Upgrade technology allows you to upgrade system and application software on an Express5800/ft series
system with minimal downtime.
The features of Active Upgrade are as follows:
•
Install software updates with minimal disruption to your applications.
The applications required for the server operation continue to run on one CPU/IO module while you upgrade
or install software on the other CPU/IO module. There is only a brief disruption when you are finished
installing updates, as your applications are restarted on the upgraded software. (The time required to stop or
restart applications depends on the application type. Active Upgrade does not shorten time to stop or restart
applications.)
•
Test the latest software updates in your environment before making the updates permanent.
After your applications are restarted on the upgraded software, you can verify the success of your software
updates. If you want to keep the changes, there is no additional downtime. Otherwise, as quickly as your
system can restart, you can abort the upgrade to go back to the original version of your software.
•
Abort the upgrade process before you commit the changes.
If you are not satisfied with an upgrade, you can abort the upgrade session to return the system to its original
state. Nothing is permanent until you choose to commit the changes. Also, there is no disruption to your
applications if you abandon the upgrade in the split mode.
•
Risks during Active Upgrade process
When one of the CPU/IO module is upgrading software (in split mode), the other CPU/IO module is running
user application. If a device failure occurs before two systems are merged, a system down will occur.
RDR resynchronization process starts to restore the duplex configuration after the upgrade was committed
or upgrade was aborted before commitment. The internal disks loses redundancy until resynchronization
completes.
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Express5800/R320c-E4, R320c-M4, R320d-E4, R320d-M4 Installation Guide (Windows Server 2008)
1. Bundled Software for the Server
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