StoneFly DR365V vs Unitrends Recovery Series (2026)

Unitrends was acquired by Axcient in 2020 and Axcient itself sits inside Kaseya's portfolio. Kaseya also owns Datto SIRIS, a competing BCDR appliance product. When one vendor owns two competing products, the market pattern is predictable: one line eventually gets deprecated or feature-frozen while the other becomes the strategic platform.

That's not speculation. Kaseya has already consolidated parts of the Datto and Unitrends roadmaps, and Unitrends' release cadence has visibly slowed since the acquisition. Partners who bet on Unitrends are betting that Kaseya invests equally in both product lines indefinitely, which is not how these situations usually play out.

StoneFly remains privately held and has stayed focused on storage appliances since 1996. The DR365V is the current flagship of a product family that has shipped consistent updates for over a decade. There's no acquisition overhang, no sibling product competing for engineering attention, and no consolidation risk on the horizon.

We're not predicting Unitrends will be discontinued tomorrow. We are saying that partners building long-term customer relationships around a backup platform should factor ownership stability into the decision, and right now those factors favour the DR365V.

Unitrends Recovery Series ships with Unitrends' own backup software bundled. It's a legitimate product, it does the core jobs well, and the single-licence bundle is simpler to quote. The downside is that the software is tied to the appliance. If you ever need to move the backup catalogue to a different platform, the migration is ugly.

DR365V ships with Veeam Backup & Replication, the most widely deployed enterprise backup software in the world. The catalogue is portable Veeam metadata. If you change storage vendors in five years, the backup catalogue moves with you. If you add a second site, Veeam replicates between sites natively. If you integrate with an SIEM, every major SIEM has a Veeam connector.

Veeam licensing is a separate line item on the DR365V quote, which some partners see as extra complexity. In exchange you get a backup software stack with a vast ecosystem, a career's worth of existing admin expertise in the market, and a much wider pool of tools that integrate with it.

Both products have improved their immutable-backup story over the past two years. The specifics still differ.

DR365V runs two layers of immutability: a hardened Linux repository with immutable file attributes, and a second-tier air-gapped vault that physically disconnects from the backup network between scheduled windows. Veeam's own immutability logic runs on top. The combination gives you three independent barriers ransomware has to cross to compromise the backup copy.

Unitrends offers immutable repositories and ReliableDR cloud replication. The cloud-side protection is solid, the on-appliance immutability is adequate but relies more heavily on software-level controls than StoneFly's hardware-backed air-gap.

For Essential Eight Maturity Level 2+ or APRA CPS 234 compliance, the air-gapped vault is the defining feature. That's the harder-to-replicate control and it's what most auditors want to see.

Choose Unitrends Recovery Series when:

• You want a single-SKU appliance with backup software included (no separate Veeam line item).
• Your operational stack is already deep into Kaseya (Autotask, IT Glue, Datto RMM) and ecosystem integration matters more than vendor diversity.
• You're comfortable with the ongoing product-consolidation question.
• Your customer base is small/mid-sized and short-term ease of operation beats long-term platform portability.

Choose StoneFly DR365V when:

• Long-term vendor stability and ecosystem breadth are priorities.
• You already have Veeam expertise on the team, or you want a platform where hiring Veeam admins is easy.
• Air-gapped immutability is a hard requirement for compliance.
• You need Proxmox VE backup, which Unitrends currently doesn't support.
• You want optionality on cloud replication targets rather than being tied to Unitrends Cloud.

CRS supplies DR365V appliances, Veeam licensing, and cloud replication targets as a single quote across Australia, New Zealand, Fiji, and PNG. Partners get AUD invoicing, local escalation, and access to the CRS deployment runbook from dozens of production rollouts.

We also offer customer migrations off Unitrends if that's the context. The typical pattern is to run Unitrends and Veeam-on-DR365V side by side for a 60-90 day retention period, cut new backups over to Veeam, and retire Unitrends once the retention window closes.