Osiris vs. Acronis Cyber Protect Cloud
Acronis sells Microsoft 365 backup as one workload inside Cyber Protect Cloud, its broader MSP-oriented cyber-protection platform. It is not a standalone product, which shapes both its pricing and how it is normally bought.
| Fact | Source | Confidence |
|---|---|---|
| Subscription-based licensing, not perpetual; Acronis's own marketing describes the model in terms of "recurring revenues" for service providers. | Acronis Backup for Microsoft 365 | Confirmed, official |
| Two billing options for the Microsoft 365 workload: per seat with unlimited storage on Acronis's own Cloud Storage, or per GB if you instead choose "Microsoft 365 Backup Storage" (Microsoft-hosted, geo-redundant). | Same page | Confirmed, official |
| Unlike some other Acronis workloads, the Microsoft 365 workload has no storage overage charges under the per-seat option. | Pricing and Licensing for Service Providers | Confirmed, official |
| Two Microsoft 365 tiers exist: "M365 Backup + DR" (daily backups plus email archiving) and "M365 Ultimate" (up to 6x/day advanced backup plus collaboration security for OneDrive, SharePoint and Teams). | Pricing and Licensing page | Confirmed, official |
| No exact per-seat or per-GB price in euros or dollars is published on Acronis's official pages; getting one requires contacting Acronis directly or using their calculator tool. | Same pages, absence checked directly | Confirmed (negative finding: no public price point) |
| No automated restore-verification feature comparable to Veeam's SureBackup was found for the Microsoft 365 workload. | Third-party technical comparison (comparisec.com), not an Acronis statement | Low–moderate: not sourced from Acronis directly, flagged accordingly |
| Not open source: proprietary commercial platform. | Absence checked across the pages above | Confirmed (negative finding) |
How Osiris differs
Acronis's storage choice (its own cloud or Microsoft's) is real optionality, but neither is storage you already own or operate; there is no option to point it at your own S3 bucket, NFS or SMB share the way Osiris supports from day one (seeYour data is your data). The lack of any published exact price is itself worth naming: Osiris's full price list is on one page, with no sales call required to learn it.
All facts above from Acronis's own official pages, accessed 2026-09-24, except where explicitly marked as third-party. Prices, editions and documented behaviour change. Verify current terms directly with Acronis before deciding. This page is not an endorsement of, or argument against, Acronis; it states what its own pages say.