Question

A data engineering team stores critical curated datasets in a Cloud Storage bucket that serves as the source of truth for downstream BigQuery loads. Recently, an automated cleanup job misconfigured a prefix and permanently deleted several current object versions, causing a multi-hour outage while data was rebuilt from raw sources. Leadership wants a solution that allows quick recovery of individual overwritten or deleted objects without maintaining separate backup copies or scripts. What should the team implement?

Accepted Answer

Enable Object Versioning on the bucket and configure lifecycle rules to expire noncurrent versions after a defined retention period.

Answer

Turn on a bucket retention policy that locks all objects for a fixed period so they cannot be deleted or overwritten.

Answer

Enable Turbo Replication to a second-region bucket so deleted objects are automatically restored from the replica.

Answer

Schedule a daily Storage Transfer Service job that copies the bucket contents to another bucket for backup.