A school day can be disrupted by more than a failed server. A phishing email can encrypt shared files, a misconfigured retention policy can remove coursework, and a power fault can take a site offline at the worst possible time. The best backup solutions for schools protect the information staff and pupils rely on, while giving leaders a realistic route back to normal teaching when something goes wrong.
For schools, backup is not simply an IT task or a copy of files held somewhere else. It is a continuity measure covering learning platforms, safeguarding records, finance data, staff documents, curriculum resources and communications. The right approach reflects how the school operates, what data it holds and how quickly each service needs to be restored.
What a school backup solution must protect
A useful backup strategy begins with the systems that would cause the greatest operational impact if they were unavailable. This often includes Microsoft 365 data, file servers, virtual machines, management information systems, finance applications, safeguarding platforms, website content and network configurations.
Microsoft 365 deserves particular attention. OneDrive, SharePoint, Teams and Exchange Online make collaboration easier, but the platform is not a substitute for a dedicated backup policy. Microsoft provides service availability and retention features, yet schools remain responsible for recovering data deleted by users, damaged by synchronisation errors or lost following a compromised account. A separate Microsoft 365 backup gives IT teams more control over retention periods, search and point-in-time recovery.
Not every system requires the same recovery target. Losing a non-critical archive for a few hours is different from losing access to safeguarding records, email or the MIS during term time. School leaders should agree two practical measures for each service: the recovery point objective, which defines how much recent data loss is acceptable, and the recovery time objective, which defines how quickly the service must be available again.
The best backup solutions for schools use layers
The most dependable model is a layered one rather than a single product. The commonly used 3-2-1 principle remains a sensible starting point: keep three copies of important data, on two different types of storage, with one copy held off site. For schools facing ransomware, this should be strengthened with an immutable or otherwise protected copy that cannot be altered or deleted by an attacker.
A practical school arrangement may combine a local backup appliance or storage repository for fast restores, encrypted cloud storage for off-site protection, and separate SaaS backup for Microsoft 365. This gives the school a range of recovery options. A teacher who deletes a folder may need a quick individual file restore. A server failure may require a virtual machine to be recovered locally. A serious site incident may require systems to be restored into a cloud environment or replacement infrastructure.
Local backup for speed
Local backup remains valuable where a school runs on-premises servers, particularly for virtualised environments. It can reduce recovery times for large volumes of data and allow priority systems to be restored quickly without relying entirely on the internet connection.
The trade-off is clear: a local device in the server room is exposed to the same building risks as the production systems. Fire, flood, theft and ransomware can affect both. Local backup should therefore support, not replace, an off-site copy.
Cloud backup for resilience
Cloud backup stores encrypted copies away from the school site and can be scaled as data grows. It is particularly useful for protecting Microsoft 365 and providing an alternative recovery location after a major incident. It also removes some of the maintenance burden associated with managing large amounts of physical backup media.
However, cloud backup is only as effective as the design behind it. Schools should understand where data is stored, how long it is retained, whether backups are immutable, how recovery is performed and whether bandwidth will support a full restore when needed. Lower-cost storage may be suitable for long-term retention but too slow for urgent operational recovery.
Disaster recovery for critical services
Backup and disaster recovery are closely related but not identical. Backup preserves data. Disaster recovery sets out how the school will restore essential technology and continue operating after a serious failure.
For a school with critical servers, disaster recovery may include virtual replicas, documented recovery sequences, temporary cloud hosting or access to replacement hardware. The goal is to restore the right services in the right order. There is little value in recovering a curriculum resource server first if identity services, internet access, finance or communications remain unavailable.
Protecting Microsoft 365 without assumptions
Many schools have moved much of their day-to-day work into Microsoft 365. This can create a false sense that all data is automatically recoverable for as long as the school needs it. Retention settings, recycle bins and version history are useful safeguards, but they are not a complete backup strategy.
A dedicated Microsoft 365 backup should cover Exchange Online mailboxes, OneDrive accounts, SharePoint sites, Teams-connected content and, where needed, Microsoft 365 Groups. It should allow authorised administrators to restore a single message, file, folder, mailbox or entire site without disrupting current work.
Security controls matter as much as coverage. Backup administration should use separate, protected accounts with multi-factor authentication and least-privilege access. If an attacker gains global administrator rights, they may attempt to delete backups or weaken retention settings. Immutable copies and alerting for unusual administrative activity provide an additional line of defence.
Recovery testing is where confidence is earned
A backup that has never been tested is an assumption, not a recovery plan. Schools should schedule restore tests throughout the year, including at least one exercise that reflects a realistic incident. This does not always mean taking systems offline. A provider can often perform controlled test restores into an isolated environment.
Testing should answer practical questions: Can the school recover a teacher’s OneDrive folder? Can it restore a key server within the agreed timeframe? Are backups complete and free from errors? Do staff know who has authority to make recovery decisions? Is the recovery documentation current after changes to systems, suppliers or staff responsibilities?
The results should be recorded and acted upon. If a restore takes longer than expected, that may point to insufficient local capacity, an unsuitable cloud tier, weak internet resilience or an unrealistic recovery objective. Finding this out during a planned test is far preferable to discovering it during an outage.
Compliance, safeguarding and retention
Schools hold sensitive personal data relating to pupils, parents, staff and safeguarding matters. Backup arrangements should therefore align with UK GDPR obligations, the school or trust’s retention schedule and access-control requirements. Encryption should protect data in transit and at rest, while audit logs should show who accessed or restored information.
Retention needs careful judgement. Keeping everything indefinitely increases storage costs and can create unnecessary data protection exposure. Retention periods should be informed by legal duties, safeguarding requirements, finance records, pupil record policies and the operational value of older material. Different systems may justifiably have different policies.
Schools also need clarity on supplier responsibilities. If an MIS, safeguarding platform or learning application is hosted by a third party, ask whether backups are included, how long data is retained, how exports are provided and what recovery commitments apply. A hosted service may be highly available without offering the specific restoration options the school expects.
Choosing a solution that fits the school
The best option depends on the size of the school, its existing infrastructure and its tolerance for downtime. A small primary school with most services in Microsoft 365 may need strong SaaS backup, protected cloud storage and a clear incident plan. A multi-academy trust with on-premises servers, multiple sites and centralised finance may require managed backup, immutable storage, monitoring and a more formal disaster recovery design.
When comparing providers, focus on recovery outcomes rather than storage capacity alone. Ask how quickly critical systems can be restored, whether ransomware-resistant copies are included, how backup failures are monitored, what support is available during an incident and how often recovery testing is carried out. A low monthly cost is poor value if recovery depends on manual work, incomplete documentation or days of waiting.
A managed approach can reduce pressure on busy school IT teams by providing monitoring, escalation, reporting and regular reviews alongside the technology itself. Herons IT helps educational organisations align backup, disaster recovery and Microsoft 365 protection with the services that keep teaching and administration moving.
The most useful next step is to identify the five services your school could least afford to lose, then test whether your current backups can restore each one within an acceptable timeframe. That exercise turns backup from an unseen insurance policy into a measurable part of school resilience.