Backup and Disaster Recovery: A Practical Plan for SMEs

What is the difference between backup and disaster recovery?

A backup is a copy of your data stored somewhere else. Disaster recovery is broader: it is the set of decisions, tools and rehearsed steps that bring your applications, data and people back to work after an outage, a cyberattack, a fire, a flood or a simple human mistake such as deleting the wrong database.

Many businesses have backups but no recovery plan. When trouble arrives they discover the data is there but nobody knows the order to rebuild servers, which passwords are needed, or how long it will take. The plan turns raw copies into a recovery you can rely on.

How do you decide what needs protecting?

Start by listing your systems and ranking them by what would hurt if they stopped: billing and accounting, the website or store, customer records, email, shared documents, the ERP or CRM. Include data that lives in unexpected places, such as spreadsheets on staff laptops and cloud apps whose data you assume the vendor protects.

For each item, ask two questions. How much recent data can we afford to lose, which is the recovery point? And how long can we be without it, which is the recovery time? A hypothetical example: an online store might tolerate losing an hour of orders but not a full day offline, while an archive tolerates far more of both.

What is a sensible backup approach?

A widely used rule is to keep three copies of important data, on two different kinds of storage, with one copy offsite. For a small business that can mean the live system, a regular backup in a cloud storage account, and a separate protected copy that cannot be changed or deleted from the main environment.

That last point matters because ransomware tries to encrypt or delete backups too. Immutable or offline copies, with access restricted to a few people and protected by multi-factor authentication, keep one good version out of an attacker's reach.

• Automate backups; manual backups get forgotten.
• Back up databases, uploaded files, configuration and application code.
• Keep at least one copy in a different location or cloud region.
• Protect backup accounts with strong passwords and multi-factor authentication.
• Keep several generations so a quietly corrupted file does not overwrite the only good copy.

How do you test whether recovery really works?

Schedule a restore test at least a few times a year. Pick a backup, restore it into a separate environment, and check that the application starts and the data looks right. Time the exercise. The real duration is almost always longer than the estimate, and that gap is exactly what the test is meant to reveal.

Record what you learned in a short runbook: where backups live, who can access them, the order of recovery, and who to call. Update it after each test. During a real incident, stress is high and memory is unreliable, so written steps are worth far more than good intentions.

What roles and communication do you need?

Decide in advance who declares an incident, who leads technical recovery, and who speaks to customers and staff. In small companies one person often holds all three roles, which is risky if they are unavailable. Name a deputy for each and keep contact numbers somewhere that does not depend on the systems that may be down.

Prepare simple messages for customers and employees. Honest, brief updates build more trust than silence. Also consider insurance, vendor contacts and any contractual or regulatory duties about reporting incidents; check current official rules and take professional advice where they apply to you.

What mistakes are most common?

The classic mistake is trusting that the cloud provider or software vendor backs up everything. Providers protect their infrastructure, but accidental deletion, account compromise or a bad change in your own settings is often your responsibility. Read the shared-responsibility terms and fill the gaps yourself.

Another is storing backups in the same account or location as the live system, so a single compromise or failure removes both. Finally, many teams back up the database but forget the files, secrets and configuration needed to rebuild everything around it.

• Assuming the vendor handles every kind of data loss.
• Keeping backups in the same account as production.
• Never testing a restore.
• Leaving out configuration, secrets and uploaded files.

Frequently asked questions

How often should we back up?

It depends on how much data you can afford to lose. A busy transactional system may need frequent backups or continuous replication, while a static website may need only daily or weekly copies.

Is cloud storage enough as a backup?

Cloud storage helps, but if files sync automatically, a deletion or ransomware infection can sync too. Use versioning or a separate protected backup copy rather than relying on a synced folder alone.

What are RPO and RTO?

Recovery point objective is how much recent data you can lose; recovery time objective is how long you can be down. Setting both for each system guides how much to invest in protection.

Do small businesses really need a written plan?

Yes. A one or two page plan listing systems, backup locations, contacts and recovery order is enough to make a crisis far less chaotic.

How long should we keep old backups?

Keep enough history to recover from slowly discovered problems and to meet any record-keeping obligations. Check the current official requirements for your sector and decide retention accordingly.

Need help with this? See our DevOps & Cloud Automation service or talk to Yash Parikh.