What are the primary features and key advantages of Altaro VM Backup for VMware Unlimited Plus?
Reliable Recovery – Restores VMware workloads quickly after outages or failures.
Automated Backup – Runs scheduled protection with minimal daily administration.
Offsite Protection – Stores backup copies securely for disaster recovery.
WAN Replication – Replicates virtual machines efficiently across remote locations.
Immutable Security – Protects backup versions against ransomware and tampering.
Performance Continuity – Supports stable long-term backup efficiency for growing environments.
Hot VM Backups – Protect running VMware machines without service downtime.
Augmented Inline Deduplication – Cuts backup storage across all jobs automatically.
Immutable Cloud Backup – Ransomware-resilient WORM copies on Azure, S3, Wasabi.
WAN-Optimized Replication – Maintains a remote standby copy for failover.
Performance Metric – CDP backs up VMs as often as every five minutes.
Important – Microsoft 365 mailbox backup needs a separate product.
Altaro VM Backup Unlimited Plus is the fully featured edition of Hornetsecurity's VM Backup, protecting an unlimited number of VMware machines per licensed host. It adds every capability in the range, including immutable cloud storage, Continuous Data Protection, and WAN-optimized replication for fast disaster recovery.
Unlimited VMs – Protect every VM on each licensed host.
Ransomware Resilience – Immutable offsite copies resist tampering and deletion.
Fast Recovery – Boot VMs directly from backup within minutes.
Lower Storage Cost – Inline deduplication shrinks repository size across jobs.
Central Management – Control all hosts from one cloud console.
Cross-Platform Restore – Recover VMware backups onto Hyper-V hosts.
It backs up and replicates VMware vSphere and ESXi virtual machines, with no limit on the number of VMs per licensed host. Unlimited Plus is the top edition, adding Continuous Data Protection (CDP), WAN-optimized replication, immutable cloud storage, and a central cloud Control Panel on top of the core backup engine. Backups run while VMs stay online, and Augmented Inline Deduplication reduces the storage each job consumes. The same backups can also be restored to a Hyper-V host if you migrate platforms.
The three perpetual editions differ by VM count per host and by feature depth. Standard protects up to 5 VMs per host and encrypts offsite copies only; Unlimited removes the VM limit and adds deduplication, GFS archiving, cross-platform restore, and offsite backup locations; Unlimited Plus adds everything else, including CDP, WAN-optimized replication, immutable cloud storage, and the cloud Control Panel. If you need cloud or immutable offsite backups, Unlimited Plus is the only edition that includes them.
| Feature | Unlimited Plus | Unlimited | Standard |
|---|---|---|---|
| VMs per host | Unlimited | Unlimited | Up to 5 |
| Continuous Data Protection | ✓ | ✕ | ✕ |
| WAN-Optimized Replication | ✓ | ✕ | ✕ |
| Immutable Cloud Storage | ✓ | ✕ | ✕ |
| Cloud Backup | ✓ | ✕ | ✕ |
| Cloud Control Panel | ✓ | ✕ | ✕ |
| Augmented Inline Deduplication | ✓ | ✓ | ✕ |
| Cross-Platform Restore | ✓ | ✓ | ✕ |
| Boot from Backup | ✓ | ✓ | ✕ |
| vCenter / Cluster Support | ✓ | ✓ | ✕ |
| GFS Archiving | ✓ | ✓ | ✕ |
| AES Encryption | Primary + Offsite | Primary + Offsite | Offsite only |
Yes. Unlimited Plus can write offsite backups to immutable cloud storage on Amazon S3, Wasabi, Azure Blob, BackBlaze B2, or Impossible Cloud Storage, using object lock so data cannot be changed or deleted during the retention window. This turns the offsite repository into a write-once, read-many store that survives an attack on the production environment. The Standard and Unlimited editions do not include immutable cloud backup. Pair this with Sandbox Restore verification to confirm a clean recovery point before you depend on it.
No, VM Backup only protects virtual machines on VMware, Microsoft Hyper-V, and Proxmox; it does not back up Microsoft 365 mailboxes, SharePoint, or OneDrive. Those workloads require Hornetsecurity's separate 365 Total Backup product. Physical (non-virtual) servers are handled by a separate, dedicated Physical Server Backup tool rather than the VM engine itself. Confirm your workloads are virtualized before choosing this edition, and budget separately if you also need SaaS or physical-server protection.
Recovery speed depends on the method you use. Continuous Data Protection can capture VM changes as often as every five minutes, keeping potential data loss to minutes rather than hours. For the fastest restart, Boot from Backup runs a VM straight from its backup file, while WAN-optimized replication keeps a ready standby copy at a remote site for near-immediate failover. File Level Restore lets you pull back individual files or folders without recovering the whole machine, and all of these options are included in Unlimited Plus.
Yes. Support for VMware vCenter and Microsoft Hyper-V CSV clusters is included in both the Unlimited and Unlimited Plus editions, but not in Standard. This lets you manage backups across a clustered VMware deployment instead of configuring each host on its own.
Yes. The same VM Backup engine protects VMware, Microsoft Hyper-V, and Proxmox machines from one console. Because Unlimited Plus includes Cross-Platform Restore, a VMware backup can be recovered onto a Hyper-V host, which is useful during a hypervisor migration.
Yes. VM Backup uses AES encryption, and in the Unlimited Plus and Unlimited editions it covers both primary and offsite backups, whereas the Standard edition encrypts offsite backups only. This means your local backup repository is protected as well as the copies you send to another site or to the cloud.
| Operating Systems | Windows 11: Home / Pro / Education / Enterprise Windows 10: Home / Pro / Education / Enterprise Windows 8: Core / Pro / Enterprise Windows 7 SP1: Starter / Home Basic / Home Premium / Professional / Ultimate / Enterprise Windows Server 2025: Standard / Datacenter Windows Server 2022: Standard / Datacenter Windows Server 2019: Essentials / Standard / Datacenter Windows Server 2016: Essentials / Standard / Datacenter Windows Server 2012 R2: Foundation / Essentials / Standard / Datacenter Windows Server 2012: Foundation / Essentials / Standard / Datacenter Windows Server 2008 R2 SP1: Standard / Enterprise / Datacenter |
| Processor | Minimum Intel Core i5 or equivalent processor, minimum 4 cores recommended. |
| Memory RAM | 2 GB RAM plus an additional 25 MB RAM for every 100 GB of data being backed up. |
| Hard Disk | 1 GB free space for VM Backup program and settings plus 15 GB for temporary files created during backup operations. |
| Display | Standard display compatible with the respective operating system. |
| Special Features | Augmented Inline Deduplication. Boot from Backup. Support for VMware vCenter. Exchange Item-Level Restore. Grandfather-Father-Son Archiving GFS. Multiple offsite backup locations. Offsite Backups over LAN or Local Connection. Offsite Backups over WAN or Internet. Cloud Backup to Microsoft Azure Blob Storage. Cloud Backup to Amazon S3. Cloud Backup to Wasabi. Cloud Backup to Backblaze. Cloud Backup to Impossible Cloud Storage. Immutable Cloud Backup support. File Level Restore. Restore VMs to a different VMware host. Sandbox Restore and Automated Verification. Flexible Backup Scheduling. Hot or Live Backups. Continuous Data Protection CDP. WAN-Optimized Replication. Automatic protection for newly discovered VMs. Operation History export through local REST API. Remote management console for one or many VM Backup installations. AES-256 encryption for primary and offsite backups. |
| Note | Requires Microsoft .NET Framework 4.8 on Windows Server 2008 R2 SP1. Requires minimum screen resolution 1280x800 for the Management Console. Main VM Backup installation cannot be installed on a machine that is also a domain controller. Free VMware ESXi is not supported. When using NBD transport, virtual disks cannot be larger than 1 TB each. Pass-through or RDM Raw Device Mappings are not backed up. Boot from Backup on VMware requires an iSCSI Software Adapter and a VMFS datastore. NFS is not supported for Boot from Backup on VMware. Cloud Backup to Microsoft Azure Blob Storage, Amazon S3, and Wasabi is available on Unlimited Plus Edition. |
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