Reliability Engineering / Disaster Recovery
Disaster Recovery
Data centers fail, people delete production data, and attacks encrypt servers. We build disaster recovery plans with recovery targets, tested backups and standby environments, so you know exactly how fast you can recover and how much data you could lose.
What Is Disaster Recovery?
Disaster recovery (DR) is the plan and the technical setup for restoring a system after a major failure: a region outage, data corruption, accidental deletion, or a ransomware attack. It's defined by two targets: how much data you can afford to lose, and how long recovery may take.
RPO and RTO in Plain Terms
Target | Question it answers | Example |
RPO: recovery point objective | How much recent data can we afford to lose? | 15 minutes means backups or replication at least every 15 minutes |
RTO: recovery time objective | How long can we be offline? | 4 hours means the system must be back within 4 hours of a disaster |
This Is For You If...
You have backups but no tested recovery plan
You don't know how long a full restore would take
Your servers, backups and database are all with one provider or in one region
Customers, insurers or auditors ask for a DR plan
Ransomware or accidental deletion would be catastrophic
Disaster Recovery Strategies
Strategy | How it works | Typical RTO | Cost |
Backup and restore | Rebuild from backups when needed | Hours to a day | Lowest |
Pilot light | Core data replicated; servers started on demand | Tens of minutes to hours | Low |
Warm standby | A smaller copy runs all the time and scales up | Minutes | Medium |
Active-active multi-site | Full copies serve traffic in several places | Near zero | Highest |
Most businesses choose backup and restore or pilot light for most systems, and warm standby for the few that can't wait. See Multi-Region Architecture for multi-region designs.
What We Build
DR Plan
Recovery targets per system, roles, contacts and step-by-step runbooks.
Tested Backups
Automated, encrypted, off-site backups with regular restore tests. See Backup & Restore Setup.
Database Replication
Cross-region or cross-provider replicas that meet your RPO. See Replication & Backup.
Standby Environments
Pilot light or warm standby built with infrastructure as code, so recovery is repeatable.
Ransomware Resilience
Immutable or isolated backup copies that attackers can't delete or encrypt.
Recovery Drills
Scheduled exercises that restore a system end to end and measure the real RTO.
Common Mistakes to Avoid
Instinct | Why It Doesn't Help | Do This Instead |
Assuming backups equal disaster recovery | Restoring everything takes far longer than expected | Measure real recovery time in drills |
Keeping backups in the same account | An attacker or mistake can delete both | Keep isolated or immutable copies |
One RTO for everything | Over-spending on minor systems, under-protecting key ones | Set targets per system |
A plan nobody has read | People improvise under pressure | Run drills with the people who'll do the recovery |
How It Works
1. Assess
List systems, data and current backups
2. Set targets
Agree RPO and RTO for each system
3. Design
Choose the recovery strategy per system
4. Build
Set up backups, replication and standby
5. Drill
Restore end to end and measure
6. Maintain
Review the plan after every major change
Why Codersarts
We build disaster recovery as working infrastructure and prove it with drills, rather than leaving a document on a shelf.
Turnaround Time
A DR assessment and plan takes 1 to 2 weeks. Building and testing the recovery setup usually takes 2 to 6 weeks.
FAQ
What is the difference between RPO and RTO?
RPO is how much data you can lose, measured in time. RTO is how long recovery can take.
Is disaster recovery the same as backups?
No. Backups are one part. Disaster recovery also covers where you restore to, who does it, in what order, and how long it takes.
How often should we test disaster recovery?
At least once or twice a year for full drills, and after major infrastructure changes.
Does disaster recovery help against ransomware?
Yes, if backups are isolated or immutable, so attackers can't delete or encrypt them.
Is our project kept confidential?
Yes. Your data, code, and systems stay confidential, and an NDA is available on request.
Fixed-Price Tasks to Start With
Backup & Restore Setup: automated backups with a tested restore
Uptime Monitoring & Alerts Setup: detect failures quickly
Related Services
How Long Would It Take You to Recover?
Find out in a drill, not during a disaster.