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A true air gap, as defined by U.S. intelligence standards (CNSSI 4009), requires complete physical separation between systems and manual (non-automated) data transfer, making most “logical air gap” solutions insufficient. It highlights that logical approaches, like cloud vaults or network-isolated storage, still maintain network connections and can be compromised by ransomware or advanced attacks. Bacula positions its solution as compliant with the true air gap standard by using physically removable media (like tape) and manual transfer processes to ensure maximum data isolation and security.