VPS backup strategy: protect the data you cannot rebuild

Separate rebuildable system from irreplaceable state

Operating-system packages and application code may be reproducible from configuration or repositories, while databases, uploads, keys, configuration, and user-generated data may be unique. Back them up according to how quickly each changes.

Document the versions and secrets needed to rebuild infrastructure that is not captured as data.

Choose backup timing from acceptable data loss

A database receiving orders every minute needs a different schedule from a static brochure site. Define the recovery point objective from the business impact of lost writes. “Nightly” is not automatically the right schedule.

Coordinate database-consistent dumps or snapshots with the application’s write behavior.

Keep copies outside the VPS failure domain

A local snapshot can be convenient but should not be the only copy if account compromise, storage failure, or accidental deletion could remove both production and recovery data. Use an independent destination with separate credentials.

Encrypt sensitive backup data appropriately and protect the encryption/recovery keys separately.

Restore into a test destination

Regularly rebuild or restore enough of the service to prove archives are readable, database state is coherent, configuration is present, and operators know the steps. A successful upload log is not a restore test.

• Classify data by change rate.
• Define acceptable data loss.
• Use an independent destination.
• Run scheduled restore drills.