All Services Routers use a compact flash disk, or card, to store the JUNOS Internet software, router configuration files, and log files. The primary compact flash drive is not hot-swappable and is accessible only after you remove the cover on the back panel of the router chassis. In addition to the primary compact flash disk, J4300 and J6300 Services Routers have a slot in the front of the chassis for removable flash media. All Services Routers also support externally pluggable USB storage devices. If the primary storage medium becomes corrupted and no secondary medium is in place, you can reload the JUNOS recovery software package onto the corrupted compact flash card with a desktop or laptop computer running either a UNIX, Microsoft Windows 2000, or Windows XP operating system.
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