Most organizations have some version of a disaster recovery plan. Few have tested it. That gap -- between having a plan and having a plan that actually works -- is where incidents turn into disasters.
A disaster recovery plan defines how your organization restores IT systems after a disruption. Ransomware, hardware failure, data center outage, human error -- the cause matters less than your ability to recover. The plan is the difference between a two-hour outage and a two-week crisis.
Start With RTO and RPO -- and Make Them Real
Recovery time objective (RTO) is how long you can be down before the business takes serious damage. Recovery point objective (RPO) is how much data you can afford to lose -- measured in time. These are not technical targets. They are business decisions.
I have sat with leadership teams that said their RTO was four hours, then discovered their backup infrastructure could not restore their primary database in under 14. The gap exists because the targets came from IT defaults rather than conversations with business stakeholders about what a prolonged outage actually costs. Set RTO and RPO based on what the business can genuinely tolerate. Then build infrastructure to meet it.
Document the Runbooks Before You Need Them
Every critical system should have a documented recovery runbook -- step-by-step instructions for restoration that someone other than the original architect can follow. The person who built the system may not be available during the incident. The runbook needs to be good enough for someone else to execute it under pressure, at 2am, with leadership asking for updates every 15 minutes.
Runbooks go stale. Every time a system changes significantly, the runbook needs to be updated. This is not glamorous work. It is also not optional if you want recoveries that go smoothly.
Test Backup Restoration -- Not Just Backup Creation
This is the most common failure mode I see. Organizations invest in solid backup infrastructure, verify that backups are completing successfully, and assume they are covered. Then a recovery event happens and they discover the backups are corrupt, the restoration process takes three times longer than expected, or a critical dependency was never included in the backup scope.
Test actual restoration. Restore to an isolated environment. Validate that the system comes up, that data is intact, and that you can complete the process within your RTO. Do this on a schedule -- quarterly at minimum for critical systems. The first recovery test should never happen during an actual incident.
Clear Roles and Communication Paths
During an incident, confusion about who has authority to make decisions costs time. The DR plan needs to define who declares an incident, who has authority to initiate recovery procedures, and who is responsible for communicating with customers, regulators, and internal stakeholders.
External communication is where organizations often struggle. Regulators in many industries have notification requirements with specific timeframes. Customers expect timely and honest communication. Having pre-drafted templates and a clear approval chain before an incident saves significant time and reduces the risk of saying the wrong thing while under pressure.
The Plan Is Only as Good as the Last Test
Run a tabletop exercise at least annually. Bring in the people who would actually be involved -- IT, leadership, legal, communications. Walk through a realistic scenario. Identify where the plan breaks down. Update it. Then test the technical components again.
Organizations that do this consistently are the ones that recover from incidents in hours rather than days. In my experience, the difference between a two-hour recovery and a two-week recovery is almost never the technology. It is almost always the preparation.