In today’s digital-first environment, uninterrupted access to business data is critical. Hardware failures, cyberattacks, outages and other disruptions can quickly affect business operations. Data replication helps organisations maintain access to critical information by keeping copies of data across multiple systems or locations.
However, replication works best as part of a broader data protection strategy that also includes data backup and recovery.
What Is data replication?
Data replication is the process of copying data from one system to another and keeping the copies synchronised. If the primary system becomes unavailable, the replicated copy can support continued access and faster recovery.
Replication can be implemented across:
- On-premises data centres
- Cloud environments
- Hybrid infrastructures
- Multiple geographic locations
Types of data replication
Synchronous replication
Data is written to the primary and secondary systems at the same time. It is designed to minimise data loss and is generally suited to mission-critical workloads.
Asynchronous replication
Data is copied to the secondary system shortly after it is written to the primary system. It can support replication over longer distances, although some recent data may not be available following a failure.
Scheduled replication
Data is copied at defined intervals, such as hourly or daily. This can be suitable for workloads where continuous replication is not required.
How data replication supports high availability
Replication supports high availability in several ways:
Reduced downtime: A secondary copy can help organisations continue operations when primary infrastructure fails.
Faster failover: Replicated data can support automated or manual failover to a secondary system.
Improved resilience: Maintaining copies across different systems or locations reduces dependence on a single infrastructure component.
Replication Is not a replacement for backup
Replication and backup serve different purposes.
Replication primarily supports availability and continuity by maintaining current copies of data. However, unwanted changes can also be replicated. For example, if data is accidentally deleted, corrupted or encrypted by ransomware, those changes may also reach the replica.
This is why organisations need independent data backup and recovery alongside replication.
| Data replication | Data backup & recovery |
|---|---|
| Supports availability | Supports data restoration |
| Enables failover | Provides recovery points |
| Maintains current copies | Protects against deletion and corruption |
| Helps reduce downtime | Helps recover from data-loss incidents |
Combining both approaches provides broader protection against service disruption and data loss.
Data replication and disaster recovery
Effective disaster recovery solutions typically combine replication, backup and recovery processes.
Two important measures help organisations design their recovery strategy:
RPO (Recovery Point Objective): How much data the organisation can afford to lose, measured in time.
RTO (Recovery Time Objective): How quickly systems and data need to be restored after a disruption.
These objectives help determine which systems require continuous replication, which can rely on scheduled backups, and how quickly different workloads need to be recovered.
How Vaultastic supports data resilience
Vaultastic is Mithi’s cloud-based enterprise information archiving and management platform. It helps organisations protect and manage business-critical information through automated data capture, backup and archival, resilient storage, discovery, recovery and lifecycle management.
Vaultastic can archive information from multiple business platforms, including email, chat, file repositories and SaaS applications. This creates an independent repository of business information that can be accessed and retrieved when required.
Key capabilities include:
- Automated data capture and archival
- Secure and resilient cloud storage
- Data discovery and retrieval
- Retention and lifecycle management
- Access controls and audit trails
- Support for business continuity and data resilience
Mithi’s cloud architecture also uses replication and backups together. Its architecture documentation describes snapshot replication across availability zones along with regular backups, supporting rapid recovery in the event of infrastructure failure.
Best practices
Organisations should consider the following when building a data resilience strategy:
- Define RPO and RTO for critical workloads
- Combine replication with independent backups
- Keep protected copies separate from primary systems
- Test failover and recovery regularly
- Apply appropriate security and access controls
- Align retention and recovery policies with business requirements
Conclusion
Data replication is an important component of high availability and business continuity. It helps organisations maintain current copies of critical information and supports faster failover when infrastructure is disrupted.
But replication alone is not enough. Combining replication with data backup and recovery provides protection against both downtime and data-loss events.
With capabilities for automated archival, resilient storage, recovery, discovery and lifecycle management, Vaultastic helps organisations build a more comprehensive approach to protecting business-critical information.
FAQs
What is data replication?
Data replication is the process of copying and synchronising data across multiple systems or locations to improve availability and resilience.
Is replication the same as backup?
No. Replication primarily supports availability and failover, while backup provides independent recovery points for restoring data.
How does replication support business continuity?
It maintains copies of critical data that can be accessed from alternative systems when primary infrastructure is unavailable.
Why are RPO and RTO important?
RPO defines the acceptable amount of data loss, while RTO defines the target recovery time. Both help organisations plan appropriate disaster recovery strategies.
