NEC Express5800/R320c-E4 N8800-173F Installation Manual page 214

Chapter 2 Installing Bundled Software
(a) Splitting the system
You start the upgrade process by initiating split mode, which divides the fault-tolerant, duplexed system into two
independent, simplexed systems — a Production Side, which continues to run your applications, and an
Upgrade Side, on which you can run software installation packages. If there are any problems during upgrade,
you can abort the upgrade to return the system to its original state.
Console
Duplexed system
Express5800/R320c-E4, R320c-M4, R320d-E4, R320d-M4 Installation Guide (Windows)
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Duplexed system
Network External
storage
Duplexed System
Console
Production Side (Live)
Network
Remote
connection
Remote connection
Upgrade Side (Isolated)
Install software
Splitting the System
1. Bundled Software for the Server
Internal storage
System Data
Mirror
System Data
Internal storage
System
External
Mirroring
storage
canceled
No remote connection
System
Data
Data