Data is the most valuable asset most businesses own — and it is far more fragile than most people realise. Data corruption and data loss happen without warning, at any time, to businesses of every size. The difference between a minor disruption and a catastrophic one almost always comes down to a single question: do you have a backup you can actually restore from?
What Is Data Corruption and Why Does It Happen?
Data corruption occurs when stored data is altered, damaged, or made unreadable without deliberate intent. Unlike deletion — where data is missing — corrupted data is deceptive: the file or database appears to exist, but the content is wrong, incomplete, or inaccessible. By the time corruption is discovered, it may have been propagating silently for days, weeks, or longer.
Common causes include:
- Hardware failure. Hard drives and SSDs degrade over time. Failing sectors, read/write errors, and sudden drive death can all corrupt data mid-write, leaving files in an incomplete or inconsistent state. RAID arrays offer redundancy but do not protect against corruption that is replicated across all disks before it is detected.
- Power interruptions. An unexpected power cut or surge during a write operation can leave files or database transactions partially committed. File system journals reduce but do not eliminate this risk.
- Software bugs and failed updates. Application crashes, botched database migrations, and failed OS or firmware updates can all corrupt data. This is more common than most organisations acknowledge.
- Ransomware and malware. Modern ransomware does not just encrypt files — some strains deliberately corrupt backups and shadow copies before encrypting primary data, specifically to prevent recovery.
- Human error. Accidental deletion, overwriting the wrong file, or running a database script against the wrong environment. These account for a significant proportion of real-world data loss events.
- Bit rot. Long-term storage on HDDs or magnetic tape causes gradual, silent degradation of data as magnetic charges weaken over years, even without active use.
- Network and sync errors. Cloud sync tools can propagate corrupted or deleted files across all synced devices, replacing good copies with bad ones across your entire environment.
The Real Cost of Data Loss
IBM’s Cost of a Data Breach Report consistently places the average cost of a data breach in the UK at over £3 million for large organisations, but even for small and medium businesses the impact is severe. Beyond the direct financial cost of recovery, organisations face:
- Operational downtime while data is restored or recreated
- Regulatory obligations under UK GDPR to report certain data loss events to the ICO within 72 hours, with potential fines up to 4% of annual global turnover
- Reputational damage with clients and partners
- Permanent loss of data that cannot be reconstructed — contracts, financial records, years of emails, customer databases
Research from the University of Texas found that 94% of companies that suffer a catastrophic data loss do not survive — 43% never reopen, and 51% close within two years. These are not edge cases. They are the predictable outcome of treating backup as optional.
BIT Tech’s Backup Coverage: What We Protect
At BIT Tech IT Solutions, we design and manage backup solutions for the full range of business-critical environments. Our backup services cover:
Web Servers
Your website, web applications, and associated databases are often the face of your business and a critical operational tool. We protect web server environments including application files, databases (MySQL, MariaDB, MSSQL), and configuration data, with recovery tested to ensure your site can be restored to a known-good state quickly following a compromise, corruption, or hosting failure.
Windows Data Servers
Windows Server environments running line-of-business applications, databases, and shared services require image-level and application-aware backups that capture the full system state — not just files. Our solutions ensure that a complete server can be restored bare-metal, or that individual files and application data can be retrieved granularly without a full restore.
Microsoft Exchange Servers
Email is mission-critical infrastructure. Exchange Server requires application-aware backup that understands the Exchange database structure, logs, and transaction consistency. We back up Exchange at the mailbox and database level, enabling granular recovery of individual emails, folders, calendar items, and contacts — not just full database restores that can take hours.
Windows File Servers
Shared file server data is among the most frequently accessed — and most frequently accidentally deleted or corrupted — data in any organisation. We implement file server backup with version history, so you can restore not just deleted files but previous versions of files that have been overwritten or corrupted, going back days, weeks, or months depending on your retention policy.
Microsoft 365 (Office 365) Backups
This is one of the most widely misunderstood areas in business IT. Many organisations assume that because their data is in Microsoft 365 — in Exchange Online, SharePoint, OneDrive, and Teams — Microsoft is backing it up. This is incorrect. Microsoft’s responsibility under the shared responsibility model is to maintain platform availability, not to protect your data from accidental deletion, ransomware, or malicious insider activity.
Microsoft’s native retention tools have significant gaps: deleted items are recoverable for a limited window (typically 93 days for Exchange Online), and once that window closes, data is gone permanently. Ransomware that encrypts SharePoint and OneDrive files can propagate faster than retention windows allow recovery. We provide dedicated Microsoft 365 backup covering Exchange Online mailboxes, SharePoint sites, OneDrive for Business, and Microsoft Teams.
Backup Platforms We Deploy and Manage
Different environments have different backup requirements. We are not tied to a single vendor — we select and deploy the right platform for each client’s specific infrastructure, data volume, recovery time objective (RTO), and recovery point objective (RPO).
Datto SaaS Protection
Datto SaaS Protection is purpose-built for protecting cloud-based SaaS environments, with deep native integrations for Microsoft 365 and Google Workspace. It is one of the most capable platforms available for this specific problem.
What Datto SaaS Protection does:
- Performs three daily automatic backups of your Microsoft 365 environment, capturing changes across Exchange Online, SharePoint, OneDrive, and Teams throughout the working day
- Provides unlimited storage retention with no caps on data volume or backup history, enabling point-in-time recovery from any historical snapshot
- Enables granular recovery down to individual emails, calendar items, contacts, SharePoint files, or Teams conversations — without needing to restore an entire mailbox or site
- Protects against ransomware propagation in cloud environments by maintaining an independent backup copy completely outside the Microsoft 365 ecosystem — if ransomware encrypts your SharePoint or OneDrive, it cannot touch the Datto backup
- Provides rapid search and restore through an intuitive admin portal, allowing IT teams or managed service providers to locate and recover specific items in minutes
- Covers new user onboarding automatically — when a new Microsoft 365 licence is assigned, that user’s data is automatically included in backups without manual configuration
- Maintains backups of deleted user accounts for a configurable period, protecting data when staff leave and their licences are removed
For any business running Microsoft 365 without a third-party backup solution, Datto SaaS Protection is one of the clearest wins in managed IT: straightforward to deploy, comprehensive in coverage, and indispensable when something goes wrong.
Datto File Protect
Datto File Protect targets a specific and often overlooked risk: the data stored on individual workstations and laptops. In many organisations, critical work — proposals, designs, spreadsheets, client files — lives on employee devices rather than (or as well as) shared servers. A stolen laptop, a drive failure, or ransomware on a single endpoint can mean permanent loss of that data.
What Datto File Protect does:
- Backs up selected folders and file types from Windows and Mac endpoints continuously, capturing changes as they happen rather than in overnight windows
- Stores backups in Datto’s secure cloud, ensuring endpoint data is protected independently of the device itself — a stolen or failed laptop does not mean lost data
- Provides version history so previous versions of files can be restored, protecting against accidental overwrites and ransomware that encrypts local files
- Enables self-service restore for end users via a simple web portal, reducing helpdesk load for routine file recovery requests
- Offers centralised management for IT teams to monitor backup status across all protected endpoints from a single dashboard, with alerts for devices that have not backed up recently
File Protect is particularly valuable for remote or hybrid workforces where employees work primarily on laptops rather than connecting to a central file server.
Veeam
Veeam is one of the most widely deployed enterprise-grade backup and replication platforms in the world, and for good reason. It is the go-to solution for protecting virtualised environments (VMware vSphere and Microsoft Hyper-V), physical Windows and Linux servers, cloud workloads (Azure, AWS, Google Cloud), NAS devices, and Microsoft 365.
What Veeam delivers:
- Image-level backup and replication of entire virtual machines, enabling rapid recovery — either restoring a VM from backup or failing over to a replica with minimal downtime
- Application-aware processing for SQL Server, Exchange, Active Directory, SharePoint, and Oracle, ensuring database-consistent backups with log truncation and granular item-level recovery
- Instant VM recovery: Veeam can boot a backed-up VM directly from the backup storage, allowing a failed server to be up and running in minutes while the full restore completes in the background
- SureBackup automated testing, which starts backed-up VMs in an isolated environment and verifies they boot correctly and pass application-level checks — so you know your backups work before you need them
- Immutable backups using object lock on compatible storage, preventing ransomware or malicious insiders from deleting or modifying backup data even with administrative credentials
- Flexible storage targets including local disk, NAS, tape, object storage (S3-compatible), and Veeam Cloud Connect for off-site cloud backup through a service provider
- Granular recovery of individual files, VM disks, Exchange mailboxes and items, SQL databases and tables, Active Directory objects, and SharePoint items without a full restore
Veeam is our platform of choice for clients with complex on-premises server environments, particularly those running virtualised infrastructure where recovery time objectives are measured in minutes rather than hours.
Comet Backup
Comet is a flexible, multi-platform backup solution that works well across a diverse range of environments — making it particularly suited to clients with mixed Windows, Linux, and Mac infrastructure, or those requiring a tailored storage backend arrangement.
What Comet Backup offers:
- Cross-platform agent support covering Windows, Linux, and macOS workstations and servers, with consistent management across all platforms from a single console
- Application-aware backup for Microsoft SQL Server, Exchange, and MySQL/MariaDB, supporting consistent database snapshots with transaction log management
- Microsoft 365 backup via a native integration covering Exchange Online, SharePoint, OneDrive, and Teams with granular restore capability
- Flexible storage destinations: Comet can back up to any S3-compatible object storage, Azure Blob, Backblaze B2, Wasabi, FTP/SFTP targets, or local/NAS storage — giving full control over where data is stored and at what cost
- Compression and deduplication at the source before transmission, minimising storage consumption and backup windows even for large data sets
- Retention policies and scheduling configurable per device or user group, supporting grandfather-father-son rotation schemes and custom retention rules
- Web-based admin portal for centralised management, monitoring, and reporting across all backed-up devices, with email alerts for failures or missed jobs
Comet is a strong choice for clients who want more control over their storage infrastructure and costs, or who operate in environments where multiple operating systems need to be covered under a single backup solution.
The 3-2-1 Rule: The Foundation of Every Backup Strategy
Regardless of which platform is right for your environment, every effective backup strategy is built on the same foundational principle: the 3-2-1 rule.
- 3 copies of your data (production plus two backups)
- 2 different storage media or locations (e.g. local NAS and cloud)
- 1 copy stored off-site or in an isolated cloud environment
For environments facing ransomware risk, many security practitioners now recommend extending this to 3-2-1-1-0: an additional immutable backup copy, and zero errors confirmed through automated recovery testing. This is exactly the kind of architecture that Veeam SureBackup and Datto’s ransomware protection features are designed to deliver.
Your Backup Is Only as Good as Your Last Successful Restore
This is the most important point in this entire article. Organisations regularly discover — at the worst possible moment — that their backups have been failing silently for weeks, that the data they thought was protected was never included in the backup scope, or that a restore takes three times longer than their business can tolerate.
A backup strategy that is not regularly tested is not a backup strategy. It is a false sense of security.
All backup solutions we deploy at BIT Tech include monitoring and alerting for failed jobs, and we recommend scheduled restore testing — quarterly at minimum — to verify that backups are complete, consistent, and recoverable within your required timeframes.
Talk to BIT Tech About Protecting Your Business
Whether you need to protect a single Microsoft 365 tenant, a multi-server on-premises environment, or a hybrid mix of both, BIT Tech can design, implement, and manage a backup solution that matches your infrastructure, your budget, and your recovery requirements.
We take the time to understand what data you have, where it lives, how quickly you need to recover it, and what threats you face — and then build a solution around those answers rather than a one-size-fits-all product.
Contact the BIT Tech team to discuss your backup requirements and get a no-obligation assessment of your current data protection posture.
