NEC Express5800/R320a-E4 User Manual page 260

5-100 Installing and Using Utilities
Figure 4. Committing the Upgrade
When the RDR disk resynchronization is finished, all critical system resources are
running in duplex mode, and the Active Upgrade process is complete. You do not
need to restart the system, and, because your application is already running on the
upgraded software, there is no additional downtime.
TIPS:
Aborting the Active Upgrade Process, page 5-101
Active Upgrade State Model, page 5-102
Software Upgrade Support, page 5-104
Prerequisites, page 5-106