Acronis Telemetry Finds Immutable Backups Cover 1.4% of Backup Storage
Summary
Acronis telemetry puts immutable backup usage at about 49PB across roughly 170,000 tenants—1.4% of its 3,600PB backup footprint. The article recommends staged deployment, cloud or dual destinations, storage planning, monitoring, and restore tests.
Key points
- Acronis telemetry reports about 170,000 tenants with active immutable storage, protecting roughly 49PB out of a 3,600PB backup footprint.
- About 253,000 of 846,000 tenants with immutability configured have it enabled; approximately 593,000 configured tenants have it disabled.
- The article says telemetry found no meaningful difference in backup success rates, duration, or retries between immutable and non-immutable policies.
- Dual-destination setups had lower reported failure rates: 2.19% for local-folder plus cloud and 3.47% for network-share plus cloud, compared with roughly 5%–6% for single destinations.
- The article identifies partial enablement, storage and retention planning, and concern about costs as operational barriers; it recommends efficient backup designs and staged rollout.
- Recommendations include protecting critical workloads with a recent immutable copy, starting with weekly full backups and 14–30 days of retention, and regularly monitoring quotas and testing restores.
Article Details
- Publisher
- Acronis
- Report Period
- H2 2025 telemetry; public survey references span 2024–2025
- Scope
- Acronis telemetry and public surveys on immutable-backup adoption, storage coverage, operational performance, and rollout practices.
- Sample Size
- Acronis telemetry covered approximately 846,000 customer tenants with immutability configured; public-survey sample sizes are not disclosed.
- Key Statistics
- Acronis telemetry reported approximately 172,000 customer tenants with immutability enabled and actual storage usage, protecting about 49PB of customer data.
- The 49PB of immutable storage was about 1.4% of the approximately 3,600PB total backup footprint.
- During H2 2025, backup count grew approximately 14% and the data-churn metric grew about 35%.
- Reported failure rates were 3.47% for network-share-plus-cloud and 2.19% for local-folder-plus-cloud, compared with 5.01%–5.80% for the cited single-destination configurations.
- A June 2025 joint advisory said the Play ransomware group had exploited about 900 entities as of May 2025.
- Recommendations
- Require at least one recent, tested immutable recovery path for each critical workload.
- Start with weekly full backups for important workloads and a 14–30 day immutability window.
- Consider cloud object storage or a dual-destination design, retaining a local or near-local copy for faster restores and an immutable cloud copy for resilience.
- Plan quota and retention, review heavy workloads for more storage-efficient backup methods, and act when quota utilization exceeds 80%.
- Pair rollout with quarterly restore drills and monitor immutable coverage, quota utilization, p95 duration, weekly success rate, and the last successful immutable restore.
Threat Actors
Vendors
AcronisThe article analyzes adoption and operational coverage of immutable backups using Acronis telemetry and public surveys, finding meaningful but limited deployment (about 170,000 tenants protecting ~49PB, roughly 1.4% ofAmazon Web ServicesAWS and Azure both provide mainstream WORM-style controls, and the