Backup Strategy Absence Leading to Unrecoverable Data Loss
criticalChroma deployments without regular backups are vulnerable to unrecoverable data loss from corruption, accidental deletion, disk failure, or operational errors. Embedded mode stores all data in local persist directory — if directory is lost, data is lost. Client-server mode reduces risk but still requires backup strategy. Production systems must implement automated backups with tested restore procedures.
No automated backup system in place for Chroma persist directory. Last backup age >7 days or no backups exist. Restore procedure not documented or tested. Single point of failure: no redundancy, all data on one disk/instance. No disaster recovery plan for Chroma data loss scenarios.
1. Assess current state: Check if any backup exists for Chroma data. Identify data location: persist directory path, volume mounts in containers. Determine criticality: RTO (Recovery Time Objective), RPO (Recovery Point Objective). Calculate data loss impact: hours of lost ingestion, business impact, user impact. 2. Implement backup immediately: For embedded mode: Use file-level backup of persist directory. Stop Chroma or use SQLite backup API for consistency. Schedule with cron, systemd timers, or backup software. For client-server: Backup server's data directory (similar to embedded). Use volume snapshots if on cloud (EBS snapshots, GCP persistent disk snapshots). Consider application-consistent snapshots. 3. Backup frequency: Critical systems (user-facing, PII): hourly or more frequent. Production systems: daily minimum, 4x daily recommended. Development: daily sufficient. RPO drives frequency: cannot lose more than backup interval. 4. Backup retention: Implement retention policy: 7 daily backups, 4 weekly backups, 3 monthly backups (7-4-3 rule). Balance storage cost vs recovery options. Longer retention for compliance requirements. 5. Backup storage: Store backups separately from primary data: different disk/volume, different availability zone, different region for DR. Use object storage (S3, GCS, Azure Blob): durable, versioned, cost-effective. Encrypt backups at rest and in transit. 6. Test restore procedure: Schedule quarterly restore tests: restore to test environment, verify collection count, test sample queries, measure restore time (must meet RTO). Document restore procedure: step-by-step runbook, required access/credentials, expected duration, validation steps. 7. Automate and monitor: Automate backup execution: use backup software, cloud-native tools, or custom scripts. Monitor backup status: alert on backup failures, alert on missing backups (age > threshold), verify backup size growth is reasonable. Dashboard showing: last backup time, backup size trend, last restore test date. 8. Disaster recovery plan: Document DR scenarios: disk failure, accidental deletion, corruption, region outage. Define RTO/RPO for each scenario. Identify escalation procedures and decision makers. Practice DR exercises annually.