Cohesity FortKnox vs Commvault Complete Data Protection: Side-by-Side Comparison (2026)

Short answer

Mid-market and enterprise teams facing ransomware threats need FortKnox because its air-gapped virtual vault makes encrypted backups genuinely unreachable during active attacks, not just theoretically so. The immutable snapshots with retention locks address NIST PR.DS and RC.RP functions that most backup tools treat as afterthoughts, while integrated threat scanning before restore prevents you from recovering compromised data. Skip this if your organization can tolerate a longer recovery window; the isolation model trades some restore speed for the certainty that your backup tier stays isolated even when production infrastructure is already encrypted. Teams protecting AI databases and multi-cloud data estates need Commvault Complete Data Protection because it handles 50+ database types,including modern vector databases and data lakes,in a single pane of glass, which matters when your backup tool can't speak the native language of your data platform. Support for AWS RDS, BigQuery, Cosmos DB, and on-premises Oracle simultaneously, combined with AI-driven backup automation, cuts the operational overhead that typically sinks hybrid deployments. Skip this if you're running a homogeneous environment with a single database vendor; the unified interface adds complexity that won't pay for itself when you're protecting only SQL Server.