This article contains information about using Non-Maskable Interrupt (NMI) button on a NetScaler appliance.

Requirements

Review the NetScaler MPX Hardware Platforms and NetScaler SDX Hardware Platforms page, to verify the NetScaler platforms that have the NMI button.

NMI Button

If the NetScaler appliance does not respond, and you want to force a core dump and restart the appliance, you can use the NMI button. The core files help the Citrix Technical Support team to investigate the reason for the NetScaler appliance not to respond.

The NMI button is the recessed red button available at the rear of the NetScaler appliance models. When you long press this button, the NetScaler appliance dumps the core and restarts the appliance. The vmcore and kernel files are available in the /var/crash directory.

Note: The process of dumping a core and restarting the appliance can take between 10 and 45 minutes, depending on the RAM of the appliance.

Additional Resources

To remotely perform a core dump, refer to NetScaler Documentation - Performing a Core Dump .