The sd-card offline command enables the SD card to log out and uninstalls the SD card service.
Only the USG6510E/6510E-POE/6530E support this command.
To prevent SD card damage, data loss, and system breakdown caused by improper SD card removal, run the sd-card offline command before you remove the SD card.
When the device and SD card are running, the device sends logs to the SD card for storage. After the SD card becomes offline, device logs may be lost because of insufficient storage space.