As technology continues to evolve, the need for effective backup strategies has become increasingly important. In today's digital world, data is more vulnerable than ever before and a single cyber attack or hardware failure can result in significant losses. This is where air gap backup comes into play.

[**Air Gap Backup**](https://stonefly.com/resources/what-are-air-gapped-backups/) is a security measure used to protect critical data from being compromised by isolating it from the internet and other networks. In simple terms, air gap backup involves physically separating the backed-up data from any potentially vulnerable systems or networks.

This method of backup is considered to be one of the most secure as it creates an "air gap" between the backed-up data and potential threats. In this article, we will take a closer look at air gap backup and why it is considered the ultimate backup strategy.

## What is Air Gap Backup?

Air gap backup involves physically isolating data from any online or connected systems. This can be achieved by storing the backed-up data on a separate physical device such as a hard drive, tape drive, or even an offline server.

The key concept of air gap backup is to keep the backed-up data in a location that is not accessible by any online or connected systems. This ensures that even if a [**cyber attack**](https://www.cisco.com/c/en/us/products/security/common-cyberattacks.html) occurs, the backed-up data remains safe and secure.