DevOps Descent

Posted on Apr 2

Why Recent Global Events Prove Your Backups Must Live in Multiple Regions & AZs (Not Just One)

#ai #devops #backup #war

Yesterday’s escalation in the Middle East (Iranian strikes hitting airports, oil tankers, and cities across Kuwait, Qatar, UAE, and Israel) reminded us once again how fragile single-region assumptions really are.

Combine that with the constant threat of natural disasters — earthquakes, floods, wildfires, or even a freak data-center power event — and the message is crystal clear:

Your backups belong in many Availability Zones and many Regions.

One Region (or even one AZ) going dark can take your entire workload with it. We’ve seen this pattern in past cloud outages and disasters; recent geopolitical events just added another layer of risk.

The Upgraded 3-2-1 Rule for 2026 Reality

3 copies of your data
2 different storage/media types
1 offsite (different Region)
Plus: Immutability (Object Lock / Vault Lock), encryption, regular restore testing, and zero recovery failures

All the Ways to Achieve True Multi-Region Backups on AWS

Here’s a comprehensive breakdown of native (and practical) methods to implement multi-region backups across major AWS services.

Choose based on your:

RPO (Recovery Point Objective)
RTO (Recovery Time Objective)
Cost tolerance
Workload type

1) Amazon S3 (Object Storage)

Options

S3 Cross-Region Replication (CRR)

Automatically and asynchronously copies new and updated objects to a destination bucket in another Region.
Replication Time Control (RTC)

Supports 99.99% of objects replicated within 15 minutes.
AWS Backup for S3

Create point-in-time backups of S3 buckets and automatically copy them cross-region via backup plans.

Best for

Static assets
Logs
Backup archives
Media files

Recommendation

Pair this with S3 Object Lock for ransomware protection and immutable recovery.

Terraform Example: S3 CRR

resource "aws_s3_bucket_replication_configuration" "crr" {
  bucket = aws_s3_bucket.primary.id

  rule {
    id     = "cross-region-backup"
    status = "Enabled"

    destination {
      bucket        = aws_s3_bucket.dr.id
      storage_class = "STANDARD_IA"
    }
  }
}

2) Amazon RDS & Aurora (Relational Databases)

Options

RDS Cross-Region Automated Backups

Replicates automated snapshots + transaction logs to a secondary Region.
Aurora Global Database

One primary Region with up to 5 secondary Regions, offering sub-second replication lag and fast failover.
AWS Backup Cross-Region Copy

Centralized backup plans that automatically copy snapshots to backup vaults in other Regions (or accounts).
Manual Snapshot Copy

Useful for ad hoc disaster recovery workflows.

aws rds copy-db-snapshot

Best for

Production databases needing low RPO
Disaster recovery for critical workloads

Recommendation

If you need near real-time DR, go with Aurora Global Database.

If you want scheduled, policy-driven backups, use AWS Backup.

3) Amazon DynamoDB (NoSQL)

Options

DynamoDB Global Tables

Multi-active replication across Regions.
AWS Backup

Continuous backups with cross-region copy support.

Best for

Globally distributed applications
Active-active architectures
Low-latency regional access

Recommendation

Use Global Tables when availability and regional write capability matter more than backup-only protection.

4) Amazon EBS (Block Storage) & EC2

Options

EBS Snapshots + Cross-Region Copy Snapshot your volumes and copy them to another Region.

aws ec2 copy-snapshot

AWS Backup

Automates EBS and EC2 recovery points.
AMI Copy

Copy AMIs cross-region for fast EC2 recovery.

Best for

Stateful EC2 workloads
Application servers with persistent volumes
DR-ready infrastructure templates

Recommendation

Use snapshots + AMI copy if you want quick rebuilds in another Region.

5) AWS Backup (Centralized Service — Recommended for Most Workloads)

If you want a single place to manage backups, this is the cleanest option.

AWS Backup supports 20+ AWS services under one backup policy.

Key Multi-Region Features

Cross-Region Copy Actions
Cross-Account + Cross-Region Backup Isolation
Vault Lock for Immutability
Centralized Backup Policies
Lifecycle Management

Terraform Example: AWS Backup Cross-Region Copy

resource "aws_backup_plan" "daily_dr" {
  name = "daily-with-cross-region"

  rule {
    rule_name         = "daily"
    target_vault_name = aws_backup_vault.primary.name
    schedule          = "cron(0 5 * * ? *)"  # Daily at 5 AM UTC

    lifecycle {
      delete_after = 30
    }

    copy_action {
      destination_vault_arn = aws_backup_vault.dr_region.arn

      lifecycle {
        delete_after = 90
      }
    }
  }
}

Why it stands out

This is the easiest and most scalable option for teams managing multiple AWS services.

6) File & Other Storage Services

Amazon EFS

EFS Replication
Create a read-only replica in another Region

Amazon FSx

Use AWS Backup
Or combine snapshots + DataSync

AWS DataSync

Scheduled or on-demand file movement between:
- EFS
- FSx
- S3
- On-premises systems

Best for

Shared file systems
Lift-and-shift workloads
Hybrid backup workflows

7) Additional Advanced / Hybrid Options

AWS Elastic Disaster Recovery (DRS)

Continuous replication of entire servers to a DR Region for rapid recovery.

AWS Storage Gateway

Useful for hybrid environments that need backup integration into AWS.

Third-Party Backup Tools

Examples:

Velero (for EKS)
Rubrik
Veeam

These often integrate well with:

S3 CRR
AWS Backup
Cross-account vault strategies

Multi-Cloud DR

For highly critical workloads, some teams also replicate to:

Azure
Google Cloud

This can be done using:

AWS DataSync
Custom pipelines
Storage sync tools

Implementation Best Practices

1. Use Infrastructure as Code

Use:

Terraform
AWS CDK
CloudFormation

So your backup strategy is reproducible and auditable.

2. Enable Immutability

Protect against ransomware and accidental deletion with:

S3 Object Lock
AWS Backup Vault Lock

3. Encrypt Everything

Use multi-Region KMS keys where appropriate.

4. Test Restores Regularly

A backup you’ve never restored is just a theory.

Run:

Restore drills
Regional failover tests
Recovery validation exercises

5. Monitor Backup Health

Track:

Backup job failures
Replication lag
Vault copy failures
S3 replication metrics

Use:

Amazon CloudWatch
AWS Backup reports
EventBridge alerts

6. Optimize Cost

Disaster recovery doesn’t have to bankrupt you.

Use:

S3 Glacier
S3 Deep Archive
Lifecycle rules
Tiered retention policies

7. Centralize Governance

Use AWS Organizations backup policies for multi-account control.

Final Advice

Stop treating backups as an afterthought.

Recent events + every natural disaster season prove that “it won’t happen here” is not a strategy.

If your backups are still:

single-AZ,
single-Region,
or sitting in the same blast radius as production,

then you don’t really have disaster recovery — you have optimism.

Action Item for This Sprint

Move from:

Single-region backups

Multi-AZ + Multi-Region backup architecture

Your future self — and your on-call rotation — will thank you.

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Top comments (2)

DdivyaSharma • Apr 2

Much needed🫶

DevOps Descent • Apr 2

Absolutely 💯
A backup strategy only looks good until the day you actually need it. That’s why multi-region, immutability, and restore testing matter so much now.