NEC Express5800/R320c-E4 N8800-173F Installation Manual

Also see for Express5800/R320c-E4: User guide Configuration guide Installation guide Configuration guide Configuration guide

Contents

1. Bundled Software for the ServerExpress5800/R320c-E4, R320c-M4, R320d-E4, R320d-M4 Installation Guide (Windows)212Chapter 2 Installing Bundled Software1.5 Active UpgradeActive Upgrade technology allows you to upgrade or install system and application software on anExpress5800/ft series system with minimal downtime. (Windows Server 2012 does not support ActiveUpgrade.)Active Upgrade is an optional software. To use this feature, you need prepare the following option separately."Active Upgrade option for ft series"This section describes the overview of Active Upgrade process, the procedure and prerequisites necessary forpreparing the system for the upgrade process, and configuring and performing the upgrade process with ActiveUpgrade Console.1.5.1 OverviewActive Upgrade technology allows you to upgrade system and application software on an Express5800/ft seriessystem 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 upgradeor install software on the other CPU/IO module. There is only a brief disruption when you are finishedinstalling updates, as your applications are restarted on the upgraded software. (The time required to stop orrestart applications depends on the application type. Active Upgrade does not shorten time to stop or restartapplications.)• 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 softwareupdates. If you want to keep the changes, there is no additional downtime. Otherwise, as quickly as yoursystem 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 originalstate. Nothing is permanent until you choose to commit the changes. Also, there is no disruption to yourapplications if you abandon the upgrade in the split mode.• Risks during Active Upgrade processWhen one of the CPU/IO module is upgrading software (in split mode), the other CPU/IO module is runninguser 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 committedor upgrade was aborted before commitment. The internal disks loses redundancy until resynchronizationcompletes.