Understanding Nonvolatile Storage in a Virtual Chassis Configuration
The Juniper Networks EX4200 Ethernet Switch stores Junos operating system (Junos OS) system files in internal flash memory. In a Virtual Chassis configuration, both the master and the backup switch store the configuration information for all the member switches.
Nonvolatile Memory Features
The Juniper Networks Junos OS for Juniper Networks EX Series Ethernet Switches optimizes the way the Virtual Chassis stores its configuration if a member switch or the Virtual Chassis configuration is shut down improperly:
- If the master is not available, the backup switch takes on the role of the master and its internal flash memory takes over as the alternate location for maintaining nonvolatile configuration memory.
- If a member switch is taken offline for repair, the master stores the configuration of the member switch.
