Immutable backups: The critical gap between backup success and real recovery readiness

This Acronis telemetry and guidance report evaluates enterprise adoption of immutable backups for ransomware resilience, reporting roughly 170,000 customer tenants with active immutability protecting ~49 PB (about 1.4% of a 3,600 PB estate). It explains why coverage remains low (partial enablement, storage concerns, misconceptions about performance), shows immutability has no material performance penalty, and provides practical recommendations: start small (weekly fulls for critical workloads), prefer cloud/object storage or dual-destination designs, monitor quota/p95 duration, and make immutability visible in MSP customer reports.