Cohesity FortKnox vs Commvault Microsoft 365 Backup: Side-by-Side Comparison (2026)

Cohesity FortKnox: Cyber vault solution with immutable backups and air-gapped isolation. built by Cohesity. Core capabilities include Immutable snapshots, Virtual air-gapped isolation, Integrated anomaly detection..

Commvault Microsoft 365 Backup: Cloud-based backup and recovery solution for Microsoft 365 workloads. built by Commvault. Core capabilities include Automated policy-driven backups with customizable retention, Air-gapped backup isolation from production environments, Granular point-in-time recovery for files, emails, folders, and mailboxes..

Both serve the Backup as a Service market but differ in approach, feature depth, and target audience.

Cohesity FortKnox differentiates with Immutable snapshots, Virtual air-gapped isolation, Integrated anomaly detection. Commvault Microsoft 365 Backup differentiates with Automated policy-driven backups with customizable retention, Air-gapped backup isolation from production environments, Granular point-in-time recovery for files, emails, folders, and mailboxes.

Cohesity FortKnox is developed by Cohesity. Commvault Microsoft 365 Backup is developed by Commvault. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Cohesity FortKnox integrates with AWS, Azure, GCP, Cohesity DataProtect, NetBackup. Commvault Microsoft 365 Backup integrates with Microsoft 365, Exchange Online, SharePoint, OneDrive, Microsoft Teams and 2 more. Check integration compatibility with your existing security stack before deciding.

Cohesity FortKnox and Commvault Microsoft 365 Backup serve similar Backup as a Service use cases: both are Backup as a Service tools, both cover Ransomware Prevention. Review the feature comparison above to determine which fits your requirements.