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What Is Disaster Recovery?

Disaster recovery (DR) establishes the plans, technologies, and operational procedures used to restore applications, infrastructure, and data after events that interrupt normal business operations or make critical systems unavailable.

Unlike backup, which focuses on preserving recoverable data, disaster recovery addresses how business services are returned to operation following cyberattacks, hardware failures, natural disasters, human error, or other disruptive incidents. A disaster recovery strategy typically combines workload replication, automated failover, recovery orchestration, infrastructure documentation, routine testing, and predefined response procedures to support coordinated recovery across interconnected systems.

Modern disaster recovery solutions are designed for environments that span on-premises infrastructure, private clouds, public cloud services, virtual machines, containers, and SaaS applications. Cloud-based disaster recovery has become more common because it provides access to recovery resources without requiring organizations to maintain equivalent standby infrastructure at every location.

Organizations commonly evaluate disaster recovery readiness through recovery point objective (RPO) and recovery time objective (RTO). These measurements define how much data loss and downtime can be tolerated before operational, financial, or service impacts become unacceptable.

As ransomware and other disruptive threats continue to affect IT operations, disaster recovery increasingly forms part of broader cyber resilience and data resilience strategies. Capabilities such as immutable backups, isolated recovery environments, automated testing, and continuous monitoring help organizations prepare for recovery events and verify that recovery processes remain operational.

Why Disaster Recovery Matters

An effective disaster recovery strategy helps reduce business interruption, supports service availability, protects revenue-generating operations, and enables organizations to restore critical systems after major operational failures or cyber incidents. Recovery readiness depends on more than data availability; it also requires a practical method for returning applications and infrastructure to service.

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