Barracuda Spam Firewall models 400s and higher.
The Barracuda Spam Firewall may automatically rebuild its RAID array if it notices unit degradation.
Part of the reboot process involves inspection of the RAID configuration. If a unit has failed, the disk will begin rebuild as quickly as possible. If you're unaware that your system has rebooted, it's plausible that a power surge has occurred at your server site, prompting a reboot.
Link to This Page: