Arcserve Cyber Resilient Storage vs Cohesity FortKnox: Side-by-Side Comparison (2026)

Arcserve Cyber Resilient Storage

Mid-market and enterprise teams building ransomware recovery capacity should consider Arcserve Cyber Resilient Storage for its immutable backup architecture, which isolates recovery copies from production networks where encryption spreads fastest. The vendor maps directly to NIST RC.RP (incident recovery plan execution), meaning the product is built around getting you operational again post-attack rather than preventing it upstream. Skip this if your priority is detecting threats before they land; Arcserve emphasizes recovery speed over prevention, which is the right bet only if you've already invested in detection layers elsewhere.

Cohesity FortKnox

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.