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When preparing for disaster recovery (DR), selecting the appropriate backup site is crucial. The three main types are:
- Hot Site: Fully operational, with real-time data synchronization (minimal downtime).
- Warm Site: Partially configured, requires some setup before use (moderate downtime).
- Cold Site: Basic infrastructure only, longest recovery time (lowest cost).
You Should Know:
1. Determining RTO (Recovery Time Objective)
- Use Linux commands to check system uptime and recovery logs:
uptime last reboot journalctl --list-boots
2. Testing Failover Scenarios
- Simulate a disaster recovery switch in AWS:
aws drs describe-recovery-instances aws drs start-failback --recovery-instance-id i-1234567890
3. Automating Backups
- Schedule backups with
cron:crontab -e 0 2 /usr/bin/rsync -avz /critical-data /backup-server/
4. Validating Data Integrity
- Use checksums to ensure backup consistency:
sha256sum /backup/important_file.tar.gz
5. Windows DR Commands
- Check system restore points:
vssadmin list shadows wbadmin get versions
What Undercode Say:
Disaster recovery planning is not just about technology—it’s about aligning business needs with technical solutions. A Warm Site is often the best balance for e-commerce, while Hot Sites suit financial institutions. Always validate RTO and RPO (Recovery Point Objective) with real-world tests.
Prediction:
As ransomware attacks grow, hybrid DR solutions (cloud + on-prem) will dominate, reducing reliance on pure Cold Sites.
Expected Output:
A structured DR plan with automated backups, tested failovers, and clear RTO/RPO metrics.
Relevant URLs:
IT/Security Reporter URL:
Reported By: Biren Bastien – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
