Data backup tips & retention — A9 guide

Clear, practical steps to keep your personal and team data safe, compliant with local expectations, and easy to restore when needed.

  • Scope: personal files, project archives, configuration snapshots
  • Goal: reliable recovery, minimized data loss, predictable retention
  • Region: guidance tailored for the Netherlands' context
Data backup overview
Snapshot: layered backup approach for reliability

Core principles

Redundancy

Store copies across at least two independent locations to avoid single points of failure.

Regular testing

Verify restores on a schedule so backups are actually usable when needed.

Least retention

Keep data only as long as needed for operations or regulatory requirements; minimize exposure.

Practical backup schedule

Use a simple cadence you can maintain: hourly snapshots for critical items, daily copies for active work, weekly archives for long-term reference.

  • Hourly: small critical state files and logs
  • Daily: active project folders and documents
  • Weekly: full system images and stable archives
Plan a schedule
Backup schedule illustration

Methods & automation (accordion)

Keep a fast local copy for quick restores and a remote copy for disaster recovery. Encrypt remote copies and keep keys separate.

Use versioning to retain meaningful restore points. Define retention windows per data type (short for logs, longer for records).

Schedule automatic integrity checks and occasional test restores. Logging and alerting reduce the risk of unnoticed failures.

Tools & storage types

On-premise appliances

Fast restoration and full control. Best for teams that manage their own infrastructure.

Managed remote services

Convenient off-site copies with provider-managed durability. Verify retention and export options.

Storage types

Choose a mix that suits your recovery time objectives and legal retention needs. Document where each data set lives and who can access it.

Retention policy checklist

Author & short case notes

Author face
Alex Burry
Editor at Burry Blog — covers secure storage practices and helpful tool comparisons for professionals.

Example: a small team reduced restore time from 6 hours to 20 minutes by adopting scheduled snapshots and automated verification.

Frequently asked questions

How long should I keep backups?

Define retention per data class: ephemeral logs (days), project files (months), official records (years) — align with operational and legal needs.

How to verify backups?

Run scheduled integrity checks and perform sample restores periodically. Keep logs and alerting for failures.