Backup tools have traditionally focused on one thing: copying data and putting it back. VaultSync does that -- and is also built for the case most backup workflows don't prioritize: what happens when you need to restore a VMware VM onto a Proxmox host, or migrate your entire backup strategy off one hypervisor platform onto another.
Veeam built its business on VMware backup. It does VMware backup exceptionally well -- fast, reliable, well-understood. But Veeam's architecture assumes your restore target is VMware. Commvault supports broader platforms but at enterprise complexity and enterprise pricing ($15,000-$50,000+/year for a mid-sized deployment). Acronis has moved toward a cloud-first model where they want you storing your backups in Acronis Cloud -- storage you pay for by the terabyte, month after month.
VaultSync was designed for the reality that organizations are increasingly running multiple hypervisors. You might have ESXi hosts from before the Broadcom acquisition, Proxmox nodes you're evaluating as replacements, KVM servers running specific workloads, and Docker containers everywhere. VaultSync backs up all of them -- and critically, can restore any of them to any other supported platform. Back up a VMware VM, restore it on Proxmox. That's not a future roadmap item. That's the core design.
| Capability | Veeam | Commvault | Acronis | VaultSync |
|---|---|---|---|---|
| Primary platform focus | VMware-first. Hyper-V, some Linux. Proxmox support added late 2024. | Broad: VMware, Hyper-V, cloud, physical, SaaS apps. | Physical + cloud focus. VM backup via agent. | ESXi, Proxmox, KVM, Hyper-V, Docker, VirtualBox. Platform-native APIs. |
| Mid-range annual cost | $8,000-$25,000/yr (per-socket or VUL licensing) | $15,000-$50,000+/yr (capacity or per-VM licensing) | $3,000-$10,000/yr (per-workload + cloud storage) | Contact for pricing — 20 sources, everything included |
| Cross-platform restore | Restore to same platform. V2V conversion requires Veeam ONE or manual steps. | Some cross-platform via IntelliSnap, but complex to configure. | Restore to same platform or Acronis Cloud. | Core feature. Back up VMware, restore to Proxmox or KVM. Any direction. |
| Multi-platform portability | No. Veeam's business depends on VMware customers staying on VMware. | Technically possible but not a marketed capability. | No cross-hypervisor migration tooling. | Explicit design goal. Sync VMware VMs to Proxmox/KVM continuously. Switch when ready. |
| AI backup health analysis | No. Reports and dashboards only. | Metallic AI (cloud SaaS add-on). | No. | Enterprise tier. Local AI explains backup health, flags risks, reports in business terms. |
| Where does your data go? | On-prem (self-managed repositories). | On-prem or Metallic cloud (Commvault pushes cloud). | Acronis Cloud (per-TB monthly cost) or on-prem at extra complexity. | On-prem. Your storage, your network. Optional cloud targets (S3, OCI, Azure, GCP) at Professional+. |
| Assisted HA / data clustering | Veeam Availability Suite. Significant additional cost. | DR orchestration available at enterprise tier. | Basic disaster recovery, no clustering. | Automated failover and failback. Near-instant sync between hypervisors. Professional tier. |
| Deduplication included | Yes, built-in. | Yes, built-in. | Limited without dedicated appliance. | Yes, built-in at every tier including Community. |
| Pricing model | Per-socket or Veeam Universal License (VUL) per workload. Adds up fast. | Capacity-based or per-VM. Enterprise contracts required. | Per-workload + cloud storage per TB. Costs grow with data. | Per-tier with source blocks. No per-TB cloud storage fees. Storage is yours. |
| Works without internet | Yes, on-prem. | On-prem works. Cloud features require connectivity. | Cloud-first model. Offline is degraded. | Fully operational. Air-gap deployable. |
| Cross-product integration | Standalone. Veeam ONE for monitoring (separate product). | Commvault ecosystem only. | Standalone. | Integrates with IVMIA (VM management), NIVMIA (network), OpenUTM (firewalls). Shared databus. |
| Community / free tier | Veeam Community Edition: 10 workloads, limited features. | No free tier. | Free trial only. No permanent free tier. | Free forever. 2 hosts, full backup + dedup + cross-platform sync. |
For twenty years, "backup and restore" meant copying a VM and putting it back on the same host or same cluster. That worked when everyone ran one hypervisor. Now, after VMware's licensing changes, organizations are actively diversifying. They're keeping VMware for legacy workloads while standing up Proxmox or KVM for new deployments. In that world, a backup tool that can only restore to the same platform is a constraint, not a feature.
VaultSync's cross-platform restore isn't a conversion utility you run after the fact. It's built into the backup format. When VaultSync backs up a VM, it captures the disk images and metadata in a normalized format. On restore, it translates that format into whatever the target platform expects -- VMDK for VMware, qcow2 for KVM/Proxmox, VHD for Hyper-V. The VM boots on the new platform with the same data, the same identity, the same network configuration.
What you actually spend over five years for a 20-host environment with full backup, replication, and support.
It's cheaper because we don't sell per-socket or per-TB, and there's no hardware appliance in our price. VaultSync uses platform-native APIs for backup -- the same APIs Veeam and Commvault use -- so the data fidelity is identical. The cross-platform restore capability is something neither Veeam nor Commvault offers natively. Deduplication, encryption, and incremental backups are included at the Professional tier, not sold as add-ons. The price reflects the business model: software that runs in your environment and stores data on your storage.
Veeam earned its reputation on VMware backup and it remains excellent at that specific job. Two things have changed. First, Veeam's licensing moved from per-socket (predictable) to Veeam Universal License (per-workload, harder to predict). Second, many Veeam customers are diversifying away from VMware -- and Veeam's cross-platform restore capabilities haven't kept pace with that shift. If your environment is 100% VMware and staying that way, Veeam is a strong choice. If you're running or planning to run multiple hypervisors, VaultSync was designed for exactly that reality.
Commvault does, in fact, do almost everything -- VM backup, physical servers, SaaS apps, databases, endpoints, cloud. That breadth comes with genuine complexity. Commvault deployments typically require dedicated backup administrators and significant planning. VaultSync focuses specifically on virtualization infrastructure backup with cross-platform mobility. It doesn't try to back up your Office 365 mailboxes or endpoint laptops. If you need one tool for everything, Commvault is comprehensive. If you need virtualization backup done well with cross-platform restore, VaultSync is purpose-built for that.
Convenience has a price: Acronis charges per terabyte per month for cloud storage. A 10TB backup set costs $600-$1,200/month in Acronis Cloud -- $36,000-$72,000 over five years just for storage. A 10TB NAS costs $500-$1,500 once. VaultSync lets you use your own storage -- NAS, SAN, local drives -- and optionally replicate to cloud targets (S3, OCI, Azure, GCP) that you control and pay for directly, without Acronis as the middleman.
Keep your existing backup tool running for now. Deploy VaultSync alongside it to protect the non-VMware workloads that Veeam doesn't cover well, or the new Proxmox nodes you're evaluating. Run both in parallel. When your Veeam or Commvault renewal arrives, you'll have months of operational data showing whether VaultSync can take over fully. Most organizations start by adding VaultSync for cross-platform workloads and gradually consolidate as they see the results. No rip-and-replace required.
VaultSync doesn't compete on backup speed alone -- every backup tool is fast. It competes on flexibility: the cross-platform restore that lets you move between hypervisors, the AI that explains backup health in business terms, and the economics of storing data on hardware you own instead of renting cloud space by the terabyte.
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