What does the term "air gap" in cyber recovery refer to?

The term "air gap" in cyber recovery specifically refers to a security measure that involves keeping a backup system isolated from the primary network where active data processes occur. This disconnection from the network effectively creates a barrier against cyber threats, such as ransomware attacks. By ensuring that the backup system is not connected to the internet or the primary systems, organizations enhance their ability to recover data without interference or compromise, making this an essential strategy in disaster recovery planning.

In contrast, the other options imply different concepts related to data protection and backup strategies but do not capture the essence of an air gap. A redundant backup kept offline is related but does not emphasize the disconnection aspect foundational to the air gap concept. Similarly, replication technology refers to creating copies of data between systems but lacks the critical protective layer that an air gap provides. Lastly, the physical distance between data centers is a logistical consideration rather than a direct representation of an air gap in cyber recovery. This combination of disconnection and secure backup is what makes the air gap an effective and recognized method for protecting data integrity.