Key Points
- Differentiate legal document backup, which enables fast recovery, from archiving, which preserves records long-term for compliance and eDiscovery.
- Implement core technical safeguards such as encrypted storage, immutable or WORM formats, version control, audit logging, and automated retention schedules aligned with legal requirements.
- Follow best practices like validating backups regularly, centralizing document management, enforcing least privilege access, and maintaining a complete chain of custody records.
- Archive emails and legal communications automatically with full text search, legal hold protection, and standardized export formats to support investigations and litigation.
- Combine backup and archiving in a single coordinated strategy to reduce compliance risk, simplify audits, and ensure long-term data availability for legal documentation.
Archiving legal files is a key task for IT departments and managed service providers (MSPs) that manage and protect data for law firms. Companies must hold legal documentation such as contracts, in compliance with industry standards. This includes strict retention, chain-of-custody, and auditing requirements.
This guide explains backup and archiving for secure legal documentation, which you can implement for business data backup in the legal industry. These solutions include functionality to help you meet common requirements for keeping and archiving legal documents. Examples include maintaining the integrity, security, and long-term availability of law firms’ data.
Choose an endpoint management solution that complies with industry data use regulations.
What is the best way to keep legal documents?
Law firms and businesses handling legal documents must fully understand the legally enforced measures they must take to protect data. Especially, backup and archiving. This extends to firms operating in compliance-driven industries, including MSPs that manage their IT infrastructure.
This must include consulting with legal professionals who understand the required measures, as well as with technical experts to implement the necessary technologies. This is vital as failure to comply with these regulations can lead to penalties. For example, law firms are accountable in the US for the spoliation of evidence.
Backup and data disaster recovery is a necessity for business continuity. However, additional regulations in the legal industry may stipulate additional measures, such as:
- Data retention: Legal data is often required to remain accessible and immutable for years or decades
- Versioned backups: May be required for compliance or legal defensibility as well as disaster recovery
- WORM storage, legal hold, and chain-of-custody: “Write once, read many” and preserve data so that it cannot be tampered with. Doing this while fully auditing all access and changes to all files (including emails and communications) is a common requirement
- Support standardized formats: Archives need to be kept or exportable in a format that is readable outside their native environment (e.g., PDF)
Understanding legal backup vs. archiving
Backup and archiving are intertwined IT concepts that rely on many of the same technologies, but that serve distinct purposes.
| Function | Backup | Archiving |
|---|---|---|
| Purpose | Operational resilience, disaster recovery, and rapid restore | Long-term preservation, discovery, and other legal and regulatory requirements |
| Retention Focus | Short to medium term (30-180 days) | Long-term (years or indefinite) |
| Storage Format | Compressed or encrypted | Indexed, immutable |
| Search Functionality | Limited or folder-level | Granular (full-text, metadata) |
| Legal Hold Support | No | Yes |
| Audit Trails | Basic or none | Detailed chain-of-custody logging |
While they benefit from a unified solution, backup and archiving must be treated separately. This is to ensure the best practices of each are fully met.
Data backup for law firms
All businesses need robust backup solutions. Especially those handling personal information, in accordance with privacy frameworks like GDPR and CCPA. This isn’t just for compliance: it also protects against data loss due to theft, device damage, and accidental deletion, as well as cybersecurity threats.
Legal firms are an active target. 39% reported a security breach in 2025, and more than half of those breaches resulted in the loss of client data. This makes having an effective backup strategy essential. Law firms will have additional backup requirements for operational and compliance reasons, including:
- Snapshot-based, scheduled daily backups of legal case data
- The inclusion of data from documentation systems (iManage, NetDocuments) and other specialized software
- The encryption of data in transit and at rest
- Redundancy backups are stored in multiple off-site locations and in the cloud
Using snapshot-based backups can meet compliance goals. This is done by ensuring that all previous versions of files are available for the period they are retained ( typically a minimum of 30-90 days). Backups should be regularly validated by restoring them in a test environment and ensuring that they are readable and usable.
Cloud backup for law firms
Cloud backup can help ensure the integrity and longevity of backups and archives for law firms. You must, however, ensure that you retain your own copies of files and that your chosen cloud providers are fully compliant with the same regulations that cover your organization.
Archiving legal files
There are several key processes that you can enact to comply with legal archiving requirements:
- Ensure that the mandated archiving formats are supported, for example, PDF/A, PST, and MSG, and that metadata is preserved
- Index the full text and metadata of archived documents for search and discovery
- Capture and store documents and emails in tamper-proof (WORM) formats
- Prevent relevant communications from being deleted or tampered with during litigation using legal holds
You should keep archived legal data well-organized. For example, you can sort them as classified, based on client, case, or matter. This is so that it can be readily found and properly protected or updated if necessary. All personal data and sensitive information should be secured through role-based access controls so that the environment adheres to the principle of least privilege, is fully audited, and retains data in accordance with schedules that align with internal policies.
Meeting legal requirements can be achieved through using compliant automated backup solutions.
Email archiving for law firms: eDiscovery and legal hold
Legal holds (or litigation holds) are a feature of most enterprise-grade email hosting platforms. This includes Microsoft 365 and Google Workspace. When a legal hold is in place, all covered communications are preserved so that they cannot be deleted or tampered with.
eDiscovery is another feature common to enterprise communication. For example, in Purview as a part of Microsoft 365. It is available as a third-party solution. Also, it makes communications searchable with tagging and export options for legal or regulatory purposes. It is very important for businesses operating in the legal industry to choose platforms that natively support litigation features. This will help reduce the work required to implement them and ensure compliance.
Automated email archiving should be implemented to ensure that service outages or other technical issues do not disrupt access to communications records.
Leverage NinjaOne’s powerful tools for your legal and compliance operations.
The best solution for business data backup is the one that meets all your security and compliance requirements
Every business has established its own efficient processes and operates in a unique legal environment. Industry standards such as SOC 2, ISO 27001, and ABA Model Rules 1.6 for confidentiality must be implemented. And, it must not hinder the day-to-day business operations of law firms. Detailed audit trails must be kept for all access and recovery activities. Similarly, backups and archives must be stored across on-site and cloud locations for redundancy. In some cases, data sovereignty and additional legal requirements may be necessary.
Keeping on top of the growing number of requirements for securing legal documentation is a significant task for IT teams of any size. This is particularly true for MSPs serving multiple clients. In addition to meeting ongoing infrastructure and operational obligations, IT administrators must keep stakeholders up to date. In addition, data must be continuously reviewed and purged according to defined schedules.
Choosing a unified backup and archiving solution like the NinjaOne platform gives you full flexibility. NinjaOne Backup and NinjaOne Archiver work together to help you implement business backup and archiving, automate the process, and maintain oversight and visibility. This allows you to enact a dual-layer backup and archiving strategy that fully meets the obligations of each. Perfect for disaster recovery while meeting legal discovery requirements.
