Disaster Recovery as a Service — Technology Wiki

Overview

Direct Answer

Disaster Recovery as a Service (DRaaS) is a cloud-based offering that replicates an organisation's critical infrastructure, applications, and data to a remote cloud environment, enabling rapid recovery in the event of outages or data loss. It shifts recovery responsibility from on-premises infrastructure to managed cloud providers.

How It Works

DRaaS platforms continuously replicate virtual machines, databases, and storage from primary systems to geographically distant cloud data centres using synchronous or asynchronous replication protocols. Recovery Point Objective (RPO) and Recovery Time Objective (RTO) parameters define replication frequency and failover speed. Upon detection of a failure, automated orchestration tools activate backup instances in the cloud environment, restoring service availability with minimal manual intervention.

Why It Matters

Organisations require rapid recovery capabilities to meet regulatory compliance mandates (such as financial and healthcare standards) and avoid revenue loss from extended downtime. DRaaS eliminates capital expenditure on secondary disaster recovery infrastructure whilst guaranteeing consistent recovery readiness without requiring specialist staff to manage geographically dispersed recovery sites.

Common Applications

Financial institutions use DRaaS to protect transaction processing systems, whilst healthcare providers employ it to safeguard patient records and clinical systems. Retail and e-commerce enterprises depend on DRaaS to maintain online operations during infrastructure failures.

Key Considerations

Data sovereignty regulations may restrict replication to specific geographic regions, increasing complexity. Network bandwidth constraints and replication lag present operational trade-offs that must be calibrated against acceptable recovery parameters.

Cross-References(1)

Cloud Computing

Related in Deployment & Operations

Cloud Migration

The process of moving data, applications, and workloads from on-premises infrastructure to cloud environments.

Infrastructure as Code

Managing and provisioning computing infrastructure through machine-readable configuration files rather than manual processes.

Terraform

An open-source infrastructure as code tool for building, changing, and versioning infrastructure safely and efficiently.

Platform Engineering

The practice of building and maintaining internal developer platforms that provide self-service capabilities, standardised tooling, and golden paths for software delivery teams.

Internal Developer Portal

A centralised web interface that provides developers with self-service access to infrastructure, services, documentation, and templates within their organisation.

More in Cloud Computing

Cloud Repatriation

Strategy & Economics

The process of moving workloads back from public cloud environments to on-premises or private cloud infrastructure.

Pub/Sub

Architecture Patterns

A messaging pattern where publishers send messages to topics and subscribers receive messages from topics of interest.

Container

Infrastructure

A lightweight, portable software package that bundles application code with all its dependencies for consistent execution.

Service Mesh

Architecture Patterns

An infrastructure layer handling service-to-service communication in microservices, managing traffic, security, and observability.

OAuth

Strategy & Economics

An open standard for token-based authentication and authorisation on the internet.

Edge Computing

Architecture Patterns

Processing data near the source of data generation rather than in a centralised cloud data centre.

Serverless Computing

Service Models

A cloud execution model where the provider dynamically allocates resources, charging only for actual compute time used.

Function as a Service

Service Models

A serverless cloud computing model where individual functions are executed in response to events.