A ransomware alert at 8.15am, a failed server during enrolment week, or an accidental deletion in Microsoft 365 can stop work far faster than most organisations expect. The best disaster recovery strategies are not simply about storing copies of files. They give your organisation a clear, tested way to restore critical services, protect sensitive information and keep people informed when normal operations are disrupted.
For small and mid-sized businesses and educational institutions, recovery planning needs to be proportionate. A plan that is too complicated will not be maintained. One that only covers a single server will leave major gaps. The right approach identifies what matters most, sets realistic recovery targets and assigns responsibility before an incident creates pressure.
Best disaster recovery strategies start with business priorities
Disaster recovery is often treated as an IT project, but its purpose is operational. Finance systems, teaching platforms, telephony, email, shared documents, line-of-business applications and internet access do not all carry the same urgency. If every system is labelled critical, priorities become meaningless when a real outage occurs.
Start by completing a business impact assessment. Speak to department leads and establish which services must be restored first, what happens if each one is unavailable, and how long the organisation can operate without it. A school may need safeguarding records, parent communications and its management information system available quickly. A business may place greater priority on order processing, customer data, payroll or remote access.
This exercise should produce two practical measures for each service. The recovery time objective, or RTO, is the maximum acceptable time to restore it. The recovery point objective, or RPO, is the maximum acceptable amount of data loss, measured in time. For example, an RPO of four hours means backups must be frequent enough that losing up to four hours of changes is acceptable. The tighter these targets are, the greater the cost and technical effort required, so they should reflect genuine business need rather than aspiration.
1. Maintain a documented recovery plan
A recovery plan should be usable by the people who will need it, including staff who are not IT specialists. It needs more than a list of passwords or a statement that backups exist. Document the systems in scope, their dependencies, key contacts, recovery order, suppliers, access requirements and decision-making responsibilities.
Dependencies are where many plans fail. A cloud application may be available, but staff cannot reach it without identity services, multi-factor authentication, internet connectivity or working devices. A restored server may still be unusable if its database, licence service or network configuration has not been recovered first.
Keep the plan in a secure location that remains available during an outage. If it is stored only on the systems that have failed, it will not help when it is needed. Review it following infrastructure changes, software migrations, supplier changes and staff departures.
2. Use the right mix of backups
Backups remain central to effective disaster recovery, but a single daily copy is rarely enough. The appropriate design depends on your RPO, data volumes, regulatory obligations and the speed at which systems must return. Critical data may require frequent backups or replication, while archived material may be backed up less often.
A sound approach follows the principle of keeping multiple copies of important data on different forms of storage, with one copy held separately from the main environment. This reduces the risk of one hardware failure, fire, theft or configuration error affecting every copy at once.
Back up more than file shares. Servers, databases, cloud configuration, virtual machines and endpoints may all contain information required to resume operations. Microsoft 365 also needs particular attention. Retention settings and recycle bins can help with short-term mistakes, but they are not a complete substitute for an independent Microsoft 365 backup designed to restore email, Teams content, SharePoint sites and OneDrive files when needed.
3. Protect backup copies from ransomware
Ransomware recovery is different from routine file restoration. Attackers increasingly target backup systems, administrator accounts and recovery tools because they know these are the organisation’s route back to normal operations. A backup that can be modified or deleted by a compromised privileged account is not a dependable last line of defence.
Use protected backup storage with controls that make copies difficult to alter or remove. This may include immutable storage, separate credentials, strict access permissions and alerts for unusual deletion or encryption activity. The exact technology matters less than the outcome: an attacker should not be able to compromise production systems and silently destroy every recovery option at the same time.
Retention periods also need thought. If malicious activity remains undiscovered for weeks, recent backups may contain encrypted or altered data. Keeping suitably spaced recovery points gives your team a better chance of restoring a known-clean version. Balance this against storage cost and the practical need to locate the right point quickly.
4. Plan for cloud and Microsoft 365 disruption
Cloud services reduce the burden of managing physical infrastructure, but they do not remove responsibility for continuity. Access may be affected by a local internet outage, a compromised administrator account, a misconfigured identity policy, an outage at a third-party supplier or accidental changes made by authorised users.
For Microsoft 365, establish how staff will work if a primary service is unavailable. Consider secure alternative communication channels, local access to essential contact information and defined procedures for account recovery. Review who holds global administrator permissions and ensure there are emergency access arrangements that are tightly controlled, documented and regularly checked.
Cloud-based systems can also support recovery by enabling staff to work from another location or on replacement devices. However, this relies on tested identity, device management and data access processes. A remote-working option is only useful if users can authenticate safely and reach the applications they need.
5. Test recovery, not just backup jobs
A green backup report proves that a job completed. It does not prove that the restored data will be complete, that applications will start correctly or that recovery will meet the agreed RTO. Testing is the point at which a disaster recovery plan becomes an operational capability rather than an assumption.
Schedule tests at different levels. A routine test might restore selected files or a mailbox. A more meaningful exercise could restore a virtual server into an isolated environment and confirm that staff can sign in and use the application. At least periodically, test a wider scenario such as loss of a key server, a ransomware event or the unavailability of a primary site.
Record the result, the time taken, issues identified and actions required. Testing often reveals overlooked details: expired credentials, insufficient storage, unclear ownership, undocumented dependencies or an application that requires a specialist supplier. These findings are valuable because they can be resolved calmly, rather than during a live incident.
6. Build cyber security into recovery planning
Restoring systems without addressing the cause of an incident can lead to a second outage. Following a suspected cyber attack, recovery must include containment, investigation and assurance that credentials, vulnerable devices or malicious persistence mechanisms are not carried back into service.
Good recovery planning works alongside preventative security controls. Multi-factor authentication, patch management, endpoint protection, network segmentation, least-privilege access and security monitoring all reduce the chance that an incident spreads widely. They also make recovery more manageable by limiting the number of systems affected.
Define who can authorise a restore and when external specialists, insurers, legal advisers or law enforcement need to be involved. Organisations handling personal data should also understand their responsibilities if a breach may require notification. The objective is to restore safely, not merely quickly.
7. Prepare people and communications
Technology recovery can be delayed by uncertainty as much as technical failure. Staff need to know how to report an issue, who is coordinating the response and which communication channels should be used if email or telephony is unavailable. Senior leaders need timely, factual updates that distinguish confirmed information from assumptions.
Prepare concise communication templates for employees, customers, parents, suppliers and governors where relevant. They should explain the practical impact, the actions being taken and where people can obtain updates, without sharing unnecessary technical detail or creating confusion. Clear communication protects trust while the technical work continues.
Assign named roles for incident leadership, technical recovery, supplier liaison and stakeholder communication, with deputies for each. In smaller organisations, one person may hold several roles, but responsibilities must still be clear. Make sure key contacts are available outside the systems affected by the incident.
A disaster recovery plan earns its value long before a disaster occurs. Review it regularly, test it against realistic scenarios and update it as your organisation changes. With proactive support and disciplined preparation, Herons IT can help turn recovery from a rushed response into a controlled route back to safe, productive operations.