Introduction

Ransomware attacks continue to increase in sophistication and frequency, targeting not only isolated files but now complete systems, including the OS, critical services and even recovery mechanisms. In this context, a traditional backup strategy may not provide the rapid, reliable recovery an organisation needs after an incident. In this article, we explain why Bare Metal Backup is an essential element for strengthening the cyber resilience of businesses.

When ransomware compromises complete systems

Modern ransomware spares nothing:

  • they can encrypt the OS and essential applications,
  • compromise restore points,
  • make classic backups unusable.

A complete-system recovery method lets teams rebuild without relying on backup points that may have been compromised.

What is bare-metal backup?

Bare Metal backup captures an entire computer system, from the OS to applications, including settings and drivers, in a complete image. Unlike a simple file backup, it allows a full recovery on clean or different hardware, without prior configuration.

Why bare-metal backup matters after ransomware

1. Complete recovery, even after system compromise

After an attack, the objective is to return to a clean system without residual risk. Bare-metal backup lets you restore a complete machine, including its operating system, from a known recovery point.

2. Reduction in recovery time (RTO)

During a major incident, each hour of downtime is costly. Bare-metal recovery can restart operations without manually reinstalling and reconfiguring every component.

3. Wide hardware compatibility

Recovery can be performed on different hardware, physical or virtual, which is essential when a server is destroyed or unavailable after an attack.

Protect bare-metal backups against attack

For a Bare Metal backup to be effective against ransomware, it must be integrated into an overall secure backup strategy, including:

Disconnected and immutable backup

Keeping backups offline or protecting them with immutability prevents an attacker using production credentials from encrypting or deleting protected restore points.

Data encryption

Backup encryption prevents any exploitation of the data, even if an attacker accesses it indirectly.

The 3-2-1-1 rule

A strategy that combines local, offsite, and offline copies significantly improves system resilience.

Integration into a cyber-resilience strategy

Bare Metal backup does more than restore a system: it plays a strategic role in the overall cyber resilience of the enterprise, ensuring a rapid, reliable response without external dependencies in the aftermath of an attack. To go further in this context, see our full article on cyber-resilience in 2025.

Conclusion

Faced with increasingly destructive attacks, Bare Metal backup is becoming a strategic pillar for complete, rapid and secure recovery after ransomware. Combined with disconnected and protected restore points, it can turn a major recovery effort into a documented, controlled process with less operational disruption.