AWS DRS
AWS Elastic Disaster Recovery (DRS) provides continuous block-level replication for scalable, cost-effective disaster recovery to AWS from physical, virtual, and cloud servers.
What is DRS? (Simple Explanation)
DRS is an AWS service in the Migration category. AWS Elastic Disaster Recovery (DRS) provides continuous block-level replication for scalable, cost-effective disaster recovery to AWS from physical, virtual, and cloud servers.
When Would You Use DRS?
- Disaster recovery for on-premises servers
- Cross-region DR for AWS workloads
- Ransomware recovery with point-in-time recovery
- Cloud migration with cutover testing
Who Uses DRS?
From startups to enterprises, DRS powers:
What Makes DRS Powerful
DRS Pricing & Free Tier
DMS: from $0.018/hour for dms.t2.micro. DataSync: $0.0125/GB transferred.
DRS Best Practices
- 1Run a test migration on a non-production copy before the actual cutover
- 2Use AWS Schema Conversion Tool (SCT) for heterogeneous database migrations
- 3Enable DMS CloudWatch metrics — monitor CDCLatencySource and CDCLatencyTarget
- 4Validate migrated data with checksums or row counts after migration completes
- 5Keep the source database running in read-only mode until validation is confirmed
Getting Started with DRS in 5 Minutes
- 1Open the AWS Console and navigate to DRS
- 2Click "Create" or "Get started" to begin configuration
- 3Configure the required settings — name, region, and access permissions
- 4Review and create — monitor the initial status in CloudWatch
DRS CLI Quick Reference
2 production-ready commands. Full CLI Library (225+ services) →
aws drs helpView all DRS CLI v2 commands and subcommandsaws drs describe-drs --helpView options for describing DRS resourcesPros & Cons of DRS
Pros
- Continuous block-level replication with RPO of seconds
- Point-in-time recovery with crash-consistent snapshots
- Automated failback to source infrastructure
- Non-disruptive DR drills (no production impact)
- No performance impact on source servers
Cons
- ✕Vendor lock-in — migrating away from AWS requires significant effort
- ✕Costs can be unpredictable without proper monitoring and budgeting
- ✕Learning curve for beginners — AWS has 200+ services with complex IAM policies
DRS vs Alternatives
DRS vs EC2
Choose DRS for Disaster recovery for on-premises servers and Cross-region DR for AWS workloads. It excels at continuous block-level replication with rpo of seconds.
Choose EC2 as an alternative when your requirements differ. Each service in the Migration category serves different architectural patterns.
Services That Work with DRS
DRS is rarely used alone. It is typically combined with:
Compliance & Security
How AWS DRS fits into major compliance standards. Browse all 41 frameworks →
Elastic Disaster Recovery configuration is audited by CIS Benchmarks v1.5–v3.0 for secure cloud defaults.
NIST 800-53Elastic Disaster Recovery access controls, encryption, and audit logging map to NIST 800-53 AC, SC, and AU control families.
PCI DSS 4.0Elastic Disaster Recovery encryption, access control, and logging support PCI DSS for cardholder data environments.
SOC 2Elastic Disaster Recovery security, availability, and confidentiality controls evaluated under SOC 2 Trust Services Criteria.
ISO 27001Elastic Disaster Recovery configuration and monitoring controls map to ISO 27001 Annex A information security management.
Frequently Asked Questions About DRS
What is AWS DRS?
AWS Elastic Disaster Recovery (DRS) provides continuous block-level replication for scalable, cost-effective disaster recovery to AWS from physical, virtual, and cloud servers.
What is DRS used for?
DRS is commonly used for: Disaster recovery for on-premises servers; Cross-region DR for AWS workloads; Ransomware recovery with point-in-time recovery; Cloud migration with cutover testing. It's a core service in the migration category of AWS.
Is DRS free?
DMS: from $0.018/hour for dms.t2.micro. DataSync: $0.0125/GB transferred.
What are the key features of DRS?
DRS's most important capabilities include: Continuous block-level replication with RPO of seconds. Point-in-time recovery with crash-consistent snapshots. Automated failback to source infrastructure. Non-disruptive DR drills (no production impact). No performance impact on source servers. Each of these is designed to help teams disaster recovery for on-premises servers.
How does DRS compare to alternatives?
DRS competes with both AWS-native alternatives (EC2, EBS, VPC) and third-party equivalents. The right choice depends on your specific requirements for scalability, cost, and operational overhead. See the comparisons section below for detailed guidance.
Which compliance frameworks apply to DRS?
CIS AWS v3.0: Elastic Disaster Recovery configuration is audited by CIS Benchmarks v1.5–v3.0 for secure cloud defaults. NIST 800-53: Elastic Disaster Recovery access controls, encryption, and audit logging map to NIST 800-53 AC, SC, and AU control families. PCI DSS 4.0: Elastic Disaster Recovery encryption, access control, and logging support PCI DSS for cardholder data environments. SOC 2: Elastic Disaster Recovery security, availability, and confidentiality controls evaluated under SOC 2 Trust Services Criteria. ISO 27001: Elastic Disaster Recovery configuration and monitoring controls map to ISO 27001 Annex A information security management.
People also search for
Was this page helpful?
Ready to secure your DRS configuration?
Pavora continuously monitors your AWS DRS for misconfigurations, compliance violations, and security risks.