21/07/2026
If someone asks whether your business has backups, you probably say yes. Disaster recovery is a different question.
A backup is a copy of your data. Disaster recovery is the plan that brings your business back to running condition after something goes wrong. The two get confused all the time, and the confusion costs real money when ransomware or a hardware failure hits.
A good backup setup follows the 3-2-1-1-0 rule: three copies of every important file, on two different types of storage, with one copy stored offsite, one copy that's immutable so ransomware can't encrypt it, and zero errors in your last test restore.
That last one is what most businesses skip. Untested backups are not backups.
They're an unverified promise.
Pick a normal file, an email, and a full server volume, then try to restore each one to a different location.
If the restore works, you have backups. If it doesn't, you have a problem you can fix today instead of during an attack.
Disaster recovery goes one layer further. It's the playbook for what your business does when it can't function. Things like which systems come back first, which people make decisions, which vendors get called, and how long each step is supposed to take. Without that playbook, even a working backup leaves you guessing during the worst week of your year.