Factory Reset 210 appliance when management access is not available.

Instructions

1. Power off the box. 210 boxes are powered on automatically. So you will need to either press Power button for few seconds to power off the box or run power off the box via command line.
2. Press both Reset button (hold it) and Power button simultaneously.
3. “Reset” LED in front panel will start flashing.
4. "Reset" LED will stop flashing once factory reset is done.

Please note that this procedure is required only if the management access of the device is not available. If management access is available, Factory Reset can be done from the GUI in the following path:

Configuration > System maintenance > Factory reset

https://docs.citrix.com/en-us/netscaler-sd-wan-hardware-platforms/standard-edition/210-standard-edition-appliance.html

https://support.citrix.com/s/article/CTX219781-how-to-rebootstartstop-and-perform-other-tasks-on-netscaler-sdx-instance-using-cli?language=en_US