Backup software is software that copies data, applications and whole systems from servers, virtual machines, endpoints and SaaS applications to separate storage, so that an organisation can restore files or rebuild systems after deletion, hardware failure, corruption or a ransomware attack. Business backup products add central management, scheduling, retention policies, encryption and reporting on top of the basic copy function. Since the early 2020s most vendors have repositioned the category as "cyber resilience", because ransomware operators routinely try to delete or encrypt backups before they encrypt production systems.
This list covers fourteen backup products sold to businesses, from enterprise platforms reported in SEC filings with more than US$1 billion in annual revenue to licence-free software bundled with network-attached storage. It focuses on server, virtual machine and endpoint protection that the customer administers; consumer-oriented online backup services are covered separately under cloud backup, and orchestrated failover services under disaster recovery solutions.
Contents
- What is backup software
- History and market
- Key features to compare
- Pricing models
- How to choose
- Methodology
- The list
- Comparison table
- Alternatives by use case
- Recent developments
- Frequently asked questions
- See also
What is backup software
Backup software reads data from a protected source, writes a copy to a target (disk, tape, object storage or a vendor cloud), keeps a catalogue of versions and restores selected versions on request. Business products protect several source types from one console: physical Windows and Linux servers, hypervisors such as VMware vSphere, Microsoft Hyper-V, Nutanix AHV and Proxmox VE, databases, network-attached storage, laptops and, increasingly, SaaS applications such as Microsoft 365.
The category overlaps with several neighbours. Cloud backup services sell storage capacity together with a simple client and are usually aimed at individuals and small offices; business backup software is normally licensed per workload and lets the customer choose where data is stored. Disaster recovery solutions focus on restarting systems at another site within a set recovery time objective, whereas backup is concerned with keeping recoverable copies over a retention period; most products on this list now include some failover features, which blurs the line. Cloud storage and file-sync services keep the latest copy of files available but are not a substitute for versioned, isolated backups. Endpoint protection and RMM software are separate tools, although vendors such as Acronis and N-able sell backup alongside them.
Guidance from public agencies sets the baseline that product features are measured against. The #StopRansomware Guide published by the US Cybersecurity and Infrastructure Security Agency tells organisations to maintain offline, encrypted backups of critical data, to test their availability and integrity regularly, and to keep updated "golden images" of critical systems; it explains that many ransomware variants attempt to find and delete or encrypt accessible backups.
History and market
Commercial backup for business servers grew up around tape libraries and agent-based products. Commvault, which describes itself as having thirty years of recovery history, is one of the survivors of that generation. The rise of server virtualisation in the late 2000s produced a second wave of products designed around hypervisor snapshots rather than agents; Veeam, whose history begins in 2006, is the best-known example. A later wave brought scale-out appliances and SaaS-delivered platforms from Rubrik, Cohesity and Druva, followed by MSP-oriented cloud-first services such as N-able's Cove.
The market has consolidated sharply since 2024:
- 10 December 2024: Cohesity completed its combination with the enterprise data protection business of Veritas, keeping NetBackup, NetBackup appliances and the Veritas Alta data protection offerings, and stated that the combined company had more than 12,000 customers.
- 8 December 2025: Proofpoint completed its acquisition of Hornetsecurity, owner of the VM Backup product formerly sold under the Altaro name, for total consideration of US$1.8 billion.
- 11 December 2025: Veeam completed its US$1.725 billion acquisition of Securiti AI, a data security posture management vendor.
- Fiscal 2026: Commvault reported that it had acquired Satori, a data and AI security company, to extend protection to structured and AI data.
No independent market-size estimate was consulted for this article. The two listed specialists give the clearest public view of scale: Commvault reported total revenue of US$1,183.7 million for the fiscal year ended 31 March 2026, and Rubrik reported total revenue of US$1.32 billion for the fiscal year ended 31 January 2026. Veeam, which is privately held, states that it has more than 550,000 customers.
Key features to compare
Workload coverage
The first filter is whether a product protects every system in scope: the hypervisors in use (Proxmox VE support has become a common requirement since 2024), physical servers, databases, NAS shares, endpoints and SaaS data. Enterprise platforms cover dozens of sources; SMB products may support only Windows and one or two hypervisors.
Immutability and isolation
Immutable storage prevents backup data from being changed or deleted for a set period, and an air gap keeps a copy logically or physically out of reach of production credentials. CISA advises keeping offline backups and notes that immutable storage should be used with caution, meaning that settings and retention need to be designed rather than switched on by default.
Recovery speed
Instant VM recovery boots a workload directly from the backup repository; bare-metal recovery rebuilds a physical machine from an image. Appliance-based products such as Datto SIRIS can virtualise a protected server on the local appliance or in the vendor cloud.
Recovery verification
Automated testing confirms that a backup actually boots and that applications respond. Datto, Unitrends and Arcserve each describe automated verification of restored systems; enterprise platforms offer orchestrated clean-room testing.
Threat detection in backups
Many products now scan backup data for malware or anomalous change rates, so that a restore does not reintroduce an infection. Acronis, for example, scans backups stored in its cloud for malware in its higher editions.
Deployment model
Options range from software installed on customer hardware (Veeam, NAKIVO, Bacula) to integrated appliances (Datto, Unitrends) and SaaS control planes with vendor-managed storage (Druva, Cove). The model determines who patches the backup infrastructure and where data physically resides.
Licensing unit
Vendors charge per workload, per socket, per host, per user or per terabyte. The unit matters more than the list price for growing environments, because a capacity-based licence rises with data volume while a per-host licence does not.
Pricing models
Most enterprise vendors do not publish prices. Veeam, Commvault, Rubrik, Cohesity, Druva, Datto, Unitrends, Arcserve and Bacula Systems all route buyers to quotes, configurators or partners. Published price lists are more common at the lower end of the market, and even there the figures were sometimes absent from the pages consulted for this article.
- Per workload subscription: NAKIVO sells subscriptions per workload per month, billed annually upfront, with a 20% discount for three-year terms. Veeam describes a single universal licence that moves between workloads.
- Per machine or host: Acronis requires a licence for every machine or physical host backed up and bundles cloud storage per licence: 250 GB for each server or virtual host and 50 GB for each workstation.
- Perpetual per socket or host: NAKIVO still sells perpetual licences per CPU socket for virtual environments; Hornetsecurity sells perpetual VM Backup licences per host with unlimited sockets and VMs, with a separate maintenance agreement for support and upgrades.
- Per user: SaaS backup modules (Microsoft 365, Google Workspace) are typically per user; Acronis sells them in five-seat packs.
- Non-capacity licensing: Bacula Systems states that it does not use capacity-based pricing.
- Bundled with hardware: Synology describes Active Backup for Business as licence-free for any number of computers, servers or virtual machines on a supported Synology NAS.
- Flat-fee appliance plus cloud: Datto describes a flat-fee model with free-to-use hardware and no separate charges for cloud ingress, egress or DR testing.
Free tiers exist at the bottom of the market. Veeam Backup & Replication Community Edition is free for up to 10 workloads, and Hornetsecurity VM Backup has a free edition for 2 VMs per host with no time limit.
How to choose
Large enterprises with mixed data centres, multiple clouds and regulatory recovery requirements generally shortlist Veeam, Commvault, Rubrik and Cohesity. Commvault and Rubrik publish audited financials, which helps vendor-risk reviews; Cohesity is the choice for existing NetBackup estates following the 2024 combination.
Mid-sized organisations running VMware, Hyper-V or Proxmox with a small IT team often consider Veeam, NAKIVO, Arcserve UDP or Hornetsecurity VM Backup, all of which run on customer-owned infrastructure. Organisations that prefer no backup servers at all can look at Druva or Cove, which deliver the control plane and storage as a service.
Managed service providers usually buy from vendors with multi-tenant consoles and partner billing: N-able Cove, Datto SIRIS, Unitrends and Acronis, the last of which reports more than 21,000 service-provider customers.
Small offices already using a Synology NAS can protect PCs and servers with Active Backup for Business at no licence cost; those that need cloud copies add a second destination. Organisations with large Linux, HPC or tape estates and a preference for open-source foundations can consider Bacula Enterprise.
Region: buyers with data-residency requirements should confirm where vendor-hosted storage sits. Rubrik launched a Sovereign edition of its platform during fiscal 2026, and Commvault announced a partnership with the European cloud provider STACKIT for sovereign requirements.
Methodology
Entries were selected from vendors that sell backup software for business servers, virtual machines and endpoints, that operate under the listed name in November 2026, and that document their products on their own websites. Online backup services aimed mainly at consumers were excluded and appear in the separate cloud backup list. Ownership changes were checked against acquirers' press releases; Hornetsecurity is listed as a Proofpoint business, Datto and Unitrends as Kaseya companies, and NetBackup under Cohesity.
The order is an editorial assessment, not the result of hands-on testing or user ratings. It weighs four verifiable criteria: breadth of workloads protected as described on the vendor's own pages; documented ransomware-resilience features (immutability, isolated copies, malware scanning, recovery verification); scale evidence from filings or vendor statements; and pricing transparency. Broad enterprise platforms appear first, followed by MSP-oriented and SMB products. Prices are list prices as shown on official pages in November 2026 and exclude tax; where a vendor's page showed no figures, the entry says so rather than estimating. Customer counts are the vendors' own claims.
The list
1
Hypervisor-agnostic backup and recovery platform with a free 10-workload edition
Best for: Mixed virtual and physical estates of any size
Veeam Data Platform is the commercial suite built around Veeam Backup & Replication, which is also available as a free Community Edition. The company dates its history to 2006 and states that it employs more than 7,000 people. It describes itself as the global leader in data resilience by market share and reports more than 550,000 customers, including 82% of the Fortune 500. In December 2025 Veeam completed the US$1.725 billion acquisition of Securiti AI, a data security posture management vendor, and its chief executive, Anand Eswaran, positioned the combined business as a data resilience, security and governance platform.
The platform is sold in Foundation, Advanced and Premium editions; Advanced adds monitoring, analytics and threat insights, and Premium adds orchestrated recovery. Veeam lists protection for virtual, physical, cloud, application and unstructured data, including Microsoft 365, Entra ID, Salesforce, Kubernetes and the three major public clouds, and claims support for more than 95% of hypervisors on the market. A Community Edition is free for up to 10 workloads and includes replication and granular restores, but no technical support. The main limitations are that commercial prices are not published and that the breadth of add-ons makes edition comparisons difficult from the vendor's own matrix.
Key features
- Foundation, Advanced and Premium editions
- Instant Recovery and Continuous Data Protection
- Immutable backups and Veeam Vault cloud storage
- VMware, Hyper-V, Proxmox VE and other hypervisors
- Microsoft 365, Entra ID and Salesforce backup
- Kubernetes and AWS, Azure, Google Cloud protection
Pricing
Prices for Veeam Data Platform are not published; the vendor sells through partners and a universal licence that can be reassigned between workloads. Veeam Backup & Replication Community Edition is free for 10 workloads without support; Veeam Data Platform Essentials is positioned for up to 50 workloads including NAS.
Ownership and history
Privately held. Completed the acquisition of Securiti AI on 11 December 2025; Securiti founder Rehan Jalil joined Veeam as President of Security and AI.
- First product history
- 2006
- Customers (vendor claim)
- 550,000+
- Employees (vendor claim)
- 7,000+
- Pricing
- Quote-based; Community Edition free up to 10 workloads
Strengths
- Very broad hypervisor and workload coverage
- Free Community Edition for up to 10 workloads
- Large partner and administrator ecosystem
- Choice of storage targets including its own Veeam Vault
Limitations
- No published commercial prices
- Edition matrix with many add-ons is hard to compare
- Community Edition carries no technical support
- Privately held, so no audited financials are public
2
Enterprise data protection and cyber-recovery suite from a NASDAQ-listed specialist
Best for: Large enterprises needing identity and clean-room recovery
Commvault is a US-listed (NASDAQ: CVLT) data protection company whose results releases carry a Tinton Falls, New Jersey dateline. For the fiscal year ended 31 March 2026 it reported total revenue of US$1,183.7 million, up 19%, and total annual recurring revenue of US$1,121.6 million, of which SaaS ARR was US$400.2 million. The company describes itself as a leader in unified resilience at enterprise scale and is led by president and chief executive Sanjay Mirchandani.
The product line is now organised as six recovery offerings: Cyber Recover for isolated recovery, Cloud Recover, Core Recover for complex on-premises infrastructure, SaaS Recover, ID Recover for Active Directory, Entra ID and Okta, and Agent Recover for reversing harmful actions by AI agents. Platform capabilities include Cleanroom Recovery, Air Gap Protect and threat scanning, delivered as software, SaaS or appliance. During fiscal 2026 Commvault acquired Satori to extend coverage to structured and AI data, and announced integrations with Microsoft Security and CrowdStrike Falcon Next-Gen SIEM and an alliance with NetApp. Commvault states that more than 100,000 organisations use its products. Pricing is not published, and the breadth of the portfolio means smaller customers may pay for capabilities they do not use.
Key features
- Software, SaaS and appliance deployment
- Cleanroom Recovery for isolated restore testing
- Air Gap Protect isolated cloud storage
- Active Directory, Entra ID and Okta recovery
- Threat scanning of backup data
- Protection for 200+ cloud services (vendor claim)
Pricing
Quote-based. No list prices were shown on the pages consulted; purchases go through Commvault sales and partners.
Recent results
Q4 FY2026 revenue was US$311.7 million, up 13%; subscription ARR was US$989.3 million at 31 March 2026.
- Listing
- NASDAQ: CVLT
- Revenue (FY2026, to 31 Mar 2026)
- US$1,183.7m
- Total ARR (31 Mar 2026)
- US$1,121.6m
- CEO
- Sanjay Mirchandani
- Pricing
- Quote-based
Strengths
- Audited public-company financials
- Broad coverage including identity systems and AI data
- Isolated clean-room recovery built in
- Choice of self-managed software or SaaS
Limitations
- No published prices
- Portfolio complexity suits large teams more than small ones
- Several recent acquisitions still being integrated
- Appliance and SaaS options differ in feature set
3
Cyber-resilience platform combining backup, data security and identity recovery
Best for: Enterprises treating backup as part of security operations
Rubrik (NYSE: RBRK), headed by co-founder, chairman and chief executive Bipul Sinha, describes itself as "the Security and AI Operations Company". Its core product, Rubrik Security Cloud, secures, monitors and recovers data, identities and workloads across clouds. For the fiscal year ended 31 January 2026 Rubrik reported total revenue of US$1.32 billion, up 48%, and subscription ARR of US$1.46 billion, with 2,805 customers paying US$100,000 or more in subscription ARR. Its investor site later reported subscription ARR of US$1.66 billion and 3,084 such customers as of 31 July 2026.
Rubrik's products launched during fiscal 2026 show where the platform is heading: Rubrik Security Cloud Sovereign for customers that must control data location, Intelligent Business Recovery for Microsoft 365, DevOps Protection for Azure DevOps and GitHub, and Rubrik Agent Cloud for monitoring and undoing actions by AI agents. The company's emphasis on security operations means it is usually evaluated alongside security tools as well as backup products. Limitations: the vendor's website blocked automated access during research for this article, prices are not published, and the platform is aimed at enterprise buyers rather than small offices.
Key features
- Data, identity and workload recovery across clouds
- Security Cloud Sovereign edition for data residency
- Intelligent Business Recovery for Microsoft 365
- DevOps Protection for Azure DevOps and GitHub
- Agent Cloud for auditing and undoing AI agent actions
Pricing
Quote-based; no prices are published. Rubrik sells on subscription.
Recent results
Q4 FY2026 revenue was US$377.7 million, up 46% from US$258.1 million a year earlier.
- Listing
- NYSE: RBRK
- Revenue (FY2026, to 31 Jan 2026)
- US$1.32bn
- Subscription ARR (31 Jul 2026)
- US$1.66bn
- Customers ≥US$100k ARR (31 Jul 2026)
- 3,084
- Pricing
- Quote-based
Strengths
- Strong revenue growth disclosed in SEC filings
- Security-focused feature set beyond backup
- Identity and SaaS recovery on one platform
- Sovereign deployment option
Limitations
- No published prices
- Positioned for enterprises, not small businesses
- Product breadth now extends into AI governance, which some buyers will not need
- Website blocked automated verification during research
4
Combined Cohesity and Veritas enterprise backup portfolio
Best for: Existing NetBackup and Cohesity estates
Cohesity became one of the largest data protection software vendors when it completed its combination with the enterprise data protection business of Veritas on 10 December 2024. At completion the company said it served more than 12,000 customers, including more than 85 of the Fortune 100 and nearly 70% of the Global 500. The deal brought Veritas NetBackup, NetBackup appliances and the Veritas Alta data protection offerings into Cohesity, which said it would continue to invest in products from both companies; Sanjay Poonen remained president and chief executive.
In practice the portfolio now has two lineages, Cohesity's own data protection platform and Veritas NetBackup with its appliances. Customers on either product can stay on it, which gives the combined company an unusually large installed base but also means two product architectures to maintain. Cohesity's website blocked automated access during research for this article, so feature and pricing details could not be verified from vendor pages and are omitted here. Cohesity is privately held, so it does not publish audited financial statements.
Key features
- NetBackup software and NetBackup appliances
- Veritas Alta cloud data protection offerings
- Cohesity scale-out data protection platform
- Large enterprise installed base
Pricing
Quote-based. No prices could be verified from vendor pages.
Ownership and history
The Veritas transaction covered only the enterprise data protection business; the deal was announced as making Cohesity the largest data protection software provider by its own assessment.
- Combination with Veritas completed
- 10 December 2024
- Customers at completion (company claim)
- 12,000+
- CEO
- Sanjay Poonen
- Pricing
- Quote-based
Strengths
- Very large enterprise installed base
- Continuity for NetBackup customers
- Appliance and software options
- Appliance option for NetBackup estates
Limitations
- Two product lineages to rationalise
- No published prices
- Privately held, no public financial statements
- Vendor site not accessible for automated verification
5
Backup combined with endpoint security, licensed per machine
Best for: Small and mid-sized firms wanting backup and endpoint security together
Acronis is a Swiss company, founded in Singapore and headquartered in Schaffhausen, that reports more than 750,000 business customers and more than 21,000 service providers in over 150 countries. Its business product, Acronis Cyber Protect, combines full-image and file-level backup with security functions in one product, an approach that distinguishes it from backup-only tools and places it near endpoint protection products.
Cyber Protect is sold in three editions. Standard is intended for environments with fewer than five devices or Windows Server Essentials; Advanced adds endpoint detection and response (cloud deployment only), malware scanning of backups and safe recovery; Backup Advanced adds support for KVM, Nutanix AHV and Red Hat Virtualization plus Microsoft 365 and Google Workspace backup. A licence is required for every machine or physical host, with separate Server, Windows Essentials and Workstation licence types, and each licence includes Acronis cloud storage: 250 GB per server or virtual host, 150 GB per Windows Essentials licence, 50 GB per workstation and 40 GB per public cloud VM. Microsoft 365 and Google Workspace backup are sold in five-seat packs on one-, three- or five-year terms. List prices were not displayed on the purchasing page consulted; the company directs buyers to a price configurator.
Key features
- Full-image and file-level backup
- Immutable backup and continuous data protection
- Malware scanning of backups in Acronis Cloud
- EDR in Advanced edition (cloud deployment)
- Microsoft 365 and Google Workspace backup
- Bundled cloud storage per licence
Pricing
Editions: Standard, Advanced, Backup Advanced. Licensed per machine or physical host (Server, Windows Essentials, Workstation). Cloud storage included: 250 GB per server or virtual host, 50 GB per workstation, 150 GB per Windows Essentials, 40 GB per public cloud VM. Microsoft 365, Google Workspace and email archiving in five-seat packs on 1-, 3- or 5-year terms.
- Headquarters
- Schaffhausen, Switzerland
- Customers (vendor claim)
- 750,000+ businesses; 21,000+ service providers
- Licensing
- Per machine or physical host
- Pricing
- Configurator; prices not shown on page consulted
Strengths
- Backup and security in one product
- Cloud storage allowance included with each licence
- Wide service-provider channel
- Supports less common hypervisors in Backup Advanced
Limitations
- Prices not shown on the purchasing page consulted
- EDR limited to cloud deployment
- Per-machine licensing grows with every endpoint
- Security features overlap with existing endpoint tools in many firms
6
SaaS-delivered backup with no customer-managed infrastructure
Best for: Organisations that want no backup infrastructure to manage
Druva sells backup as a SaaS service built on what it describes as a cloud-native architecture that works across multiple clouds; its Essentials Pack is marketed as "one platform, one contract, zero infrastructure". Its board includes representatives of Sequoia Capital, Nexus Venture Partners, Riverwood Capital, Tenaya Capital and CDPQ.
Druva's pricing page groups coverage into three purchasing routes. Individual workloads are priced by category: data centre (VMs, files, NAS, databases), public cloud (compute, storage, databases), productivity data (Microsoft 365, Google Workspace, endpoints), identities (Entra ID, Active Directory, Okta), CRM (Salesforce, Dynamics 365) and AI data including Microsoft 365 Copilot. A SaaS Universal License covers the main SaaS applications and identity systems on a per-user basis with pooled storage. An Essentials Pack for smaller organisations covers SaaS apps, VMware, Nutanix, Hyper-V, Proxmox, file servers, SQL, Oracle, Azure Local and native AWS and Azure services under one contract. The trade-off of the SaaS model is that data sits in Druva-operated storage, recovery speed for large on-premises VMs depends on network bandwidth, and no list prices are published.
Key features
- No customer-managed backup servers or storage
- Endpoint and Microsoft 365 backup
- VMware, Hyper-V, Nutanix and Proxmox protection
- AWS and Azure native workload backup
- Entra ID, Active Directory and Okta protection
- Microsoft 365 Copilot data coverage
Pricing
Three routes: individual workload tiers, a per-user SaaS Universal License with pooled storage, and an Essentials Pack for SMBs. Prices are not published on the pricing page; a free trial is offered.
- Delivery
- SaaS
- Licensing
- Per workload category; per user for SaaS Universal License
- Pricing
- Quote-based; free trial offered
Strengths
- Nothing to patch or host on site
- Covers endpoints, SaaS and data centre in one service
- Identity-system protection included in some plans
- Per-user licensing for SaaS simplifies budgeting
Limitations
- No published prices
- Large restores depend on internet bandwidth
- Data is held in the vendor's storage
- Fewer options for tape or on-premises copies
7
Cloud-first backup for managed service providers, storage included
Best for: MSPs protecting many small client sites
Cove Data Protection is the backup service of N-able, a cybersecurity and IT management vendor that reported US$553 million in annual recurring revenue as of 30 September 2026 and says about 500,000 organisations use its platform. N-able's platform spans data protection, security operations and unified endpoint management, and Cove is commonly bought by managed service providers.
Cove is delivered as SaaS: N-able handles patching, security and storage, and no appliances are required. It protects servers, workstations and Microsoft 365, with Google Workspace backup in public preview, and can run backups as often as every 15 minutes; N-able says its TrueDelta technology reduces the volume of redundant data sent. Worldwide cloud storage is included and the product supports image-based recovery and cloud-based disaster recovery without upfront hardware. The cloud-first design keeps operational overhead low for MSPs managing many small clients, but it offers less control over storage location and format than self-hosted software, and N-able does not publish prices.
Key features
- No appliances; vendor-managed storage
- Server, workstation and Microsoft 365 backup
- Google Workspace backup in public preview
- Backups as often as every 15 minutes
- TrueDelta change tracking
- Cloud DR without upfront hardware
Pricing
Not published. N-able describes predictable, all-in-one pricing and offers a free trial and a TCO calculator.
- Vendor ARR (30 Sep 2026)
- US$553m
- Delivery
- SaaS, storage included
- Backup frequency
- As often as every 15 minutes
- Pricing
- Quote-based; free trial
Strengths
- Storage included in the service
- Low maintenance for MSPs
- Frequent backup intervals
- Part of a wider N-able security and management platform
Limitations
- No published prices
- Oriented to MSP channel rather than direct buyers
- Limited control over storage target
- Google Workspace support still in preview at time of review
8
Appliance-plus-cloud backup and business continuity sold through MSPs
Best for: MSP clients needing local and cloud failover
SIRIS is Datto's business continuity and disaster recovery product, combining an on-site appliance with replication to the Datto Cloud. Datto's privacy, trust-centre and documentation pages are hosted on Kaseya domains, reflecting its place in the Kaseya group, and the product is marketed through managed service provider partners, to whom Datto offers free, unlimited support.
The product's distinguishing feature is recovery verification: AI-based screenshot verification, which Datto says is included at no additional cost and has more than 99% verification accuracy, boots protected systems and checks that services and applications respond. Protected servers or VMs can be virtualised locally on the SIRIS appliance or in the cloud, with direct file restore, bare-metal recovery and Fast Failback also listed. Cloud retention can be infinite or time-based. Datto describes a flat-fee model with free-to-use hardware and no separate charges for cloud ingress, egress or disaster recovery testing, but actual prices are only available on request. Buyers who do not work with an MSP may find the channel model a barrier.
Key features
- Screenshot verification with application checks
- Local and cloud instant virtualisation
- Bare-metal recovery and Fast Failback
- Infinite or time-based cloud retention
- Free-to-use appliance hardware
Pricing
Flat-fee model with free-to-use hardware and no ingress, egress or DR-testing fees, according to Datto; prices available on request through partners.
- Parent
- Kaseya
- Model
- Appliance plus Datto Cloud
- Cloud retention
- Infinite or time-based
- Pricing
- Flat fee, on request
Strengths
- Automated boot verification included
- Local and cloud failover
- Predictable fees for cloud usage
- Hardware included in the service
Limitations
- Marketed mainly through MSP partners
- No published prices
- Appliance model ties customers to Datto hardware
- Less suited to large enterprise data centres
9
Backup appliances, software and DRaaS with automated recovery testing
Best for: Mid-sized IT teams wanting an integrated appliance
Unitrends, a Kaseya company, sells backup appliances, backup software, disaster recovery as a service and cloud storage, together with SaaS backup for Microsoft 365, Google Workspace and Salesforce and endpoint backup for PCs, servers and VMs. Its UniView console manages protection across on-premises, cloud, SaaS and endpoint sources.
Unitrends emphasises recovery assurance: Automated Recovery Assurance validates backups at the application level, and BackupIQ provides recommendations and automated actions on recoverability, security and performance. Customers can restore individual files, run workloads on the appliance during an outage, or fail over to the Unitrends Cloud, which the company describes as immutable and hidden from attackers. The current hardware line is the Recovery Series Generation 10, and a FIPS mode is offered for regulated environments. Prices are not published; buyers request a quote. With Datto also inside Kaseya, Unitrends overlaps with SIRIS in the same corporate portfolio, and buyers may want assurance about each product's roadmap.
Key features
- Physical appliances and virtual software
- Automated Recovery Assurance testing
- Failover to Unitrends Cloud
- Microsoft 365, Google Workspace and Salesforce backup
- FIPS mode for regulated environments
- UniView single console
Pricing
Quote-based via a pricing request form.
- Parent
- Kaseya
- Hardware
- Recovery Series Generation 10 appliances
- Pricing
- Quote-based
Strengths
- Application-level recovery testing
- Appliance and cloud failover options
- Broad SaaS coverage
- FIPS mode available
Limitations
- No published prices
- Overlaps with Datto inside Kaseya
- Appliance refresh cycles add hardware cost
- Fewer enterprise integrations than top-tier platforms
10
NB
Lower-cost VM, server and Microsoft 365 backup with perpetual and subscription licences
Best for: SMBs on VMware, Hyper-V or Proxmox wanting perpetual licences
NAKIVO Backup & Replication is aimed at small and mid-sized organisations and service providers, and the company states that it serves more than 16,000 businesses in 190 countries. It protects VMware vSphere, Microsoft Hyper-V, Nutanix AHV, Proxmox VE, Microsoft 365, AWS EC2, Windows and Linux servers and Oracle databases, and can be installed directly on NAS devices from ASUSTOR, NETGEAR, QNAP, Synology, TrueNAS and Western Digital. Release 11.2.2 added support for Proxmox VE 9.1 and 9.2.
NAKIVO is one of the few vendors in this list to keep a detailed public price structure. Three editions are offered: Pro Essentials, Enterprise Essentials and Enterprise Plus. Subscriptions are charged per workload per month (Microsoft 365 per user, minimum 10 users; NAS per terabyte) and billed annually upfront, with 20% off three-year terms for workloads. Perpetual licences remain available per CPU socket for virtual environments, per server and per workstation in bundles of five, and per database for Oracle, each including a year of support. The dollar amounts were not visible in the page version consulted. A 15-day full-featured trial requires no credit card.
Key features
- VMware, Hyper-V, Nutanix AHV and Proxmox VE
- Installs on NAS from six vendors
- Immutable and air-gapped storage options
- Real-Time Replication for VMware
- Microsoft 365 and Oracle DB backup
- Windows and Linux server backup
Pricing
Editions: Pro Essentials, Enterprise Essentials, Enterprise Plus (contact sales). Subscription per workload/month, billed annually upfront, 20% off three-year terms; Microsoft 365 per user/month (minimum 10 users, 12% three-year discount); NAS per TB/month. Perpetual: per CPU socket (virtual), per server and per workstation in 5-packs, per TB for NAS, per database for Oracle (Enterprise Plus), with one year of support. 15-day trial.
- Customers (vendor claim)
- 16,000+ in 190 countries
- Licensing
- Per workload subscription or perpetual per socket/server
- Trial
- 15 days, no credit card
- Pricing
- Published structure; figures not visible on page consulted
Strengths
- Perpetual licences still offered
- Runs on common NAS hardware
- Early support for new Proxmox VE releases
- Transparent licence structure
Limitations
- Edition caps on sockets and bundles for Pro and Enterprise Essentials
- Fewer SaaS sources than enterprise suites
- Oracle backup limited to Enterprise Plus
- Smaller vendor than market leaders
11
Unified backup with deduplication, tape support and automated recovery testing
Best for: Mixed estates still using tape
Arcserve Unified Data Protection (UDP) is the main product of Arcserve, LLC, a long-established backup vendor. UDP protects cloud, on-premises, virtual and hyperconverged workloads, with agentless and agent-based protection for VMware, Microsoft Hyper-V, Nutanix AHV and Proxmox. It offers instant VM and bare-metal recovery, application-consistent backup and orchestrated recovery runbooks.
The product retains features that some newer cloud-first tools have dropped, including global deduplication and tape support, alongside AES/SSL encryption and role-based administration. Automated recovery testing validates recovery time and recovery point objectives and produces audit-ready reports, and the Arcserve Console can be run in the cloud or on premises. Newer additions include AI-driven anomaly detection and an assistant called ArcGenie, both promoted with the Premium edition. UDP is sold in Standard, Advanced and Premium editions, but the product page does not state how licences are calculated or list prices; buyers use online purchase, a demo or a sales contact.
Key features
- Agentless and agent-based VM backup
- VMware, Hyper-V, Nutanix AHV and Proxmox
- Global deduplication
- Tape support
- Automated RTO/RPO recovery testing
- Cloud or on-premises management console
Pricing
Standard, Advanced and Premium editions; licensing basis and prices not stated on the product page. Free trial available.
- Editions
- Standard, Advanced, Premium
- Pricing
- Not published on product page; free trial offered
Strengths
- Tape and disk in one product
- Built-in recovery testing with reports
- Proxmox and Nutanix support
- Choice of cloud or local console
Limitations
- Licensing basis not explained on product page
- No published prices
- Premium needed for anomaly detection
- Smaller ecosystem than leading vendors
12
Hyper-V, VMware and Proxmox backup formerly sold as Altaro
Best for: Small Hyper-V and Proxmox environments
VM Backup, previously marketed under the Altaro name, is a virtual machine backup product from Hornetsecurity, which Proofpoint acquired on 8 December 2025 for total consideration of US$1.8 billion. At the time Hornetsecurity reported annual recurring revenue of nearly US$200 million, more than 12,000 channel partners and MSPs, and more than 125,000 customers. The site now uses "Hornetsecurity by Proofpoint" branding.
VM Backup protects Microsoft Hyper-V, VMware and Proxmox from a single console. Its licensing is unusual for its flexibility: perpetual licences are sold per host with unlimited sockets and VMs in Standard, Unlimited and Unlimited Plus editions, while a monthly subscription for the Unlimited Plus edition is charged per backed-up VM with no upfront cost. Perpetual customers need a Service Maintenance Agreement for support and upgrades. A free edition covers 2 VMs per host with no time limit, and a 30-day trial of the full product is available. Prices were not listed on the page consulted. The product is focused on virtual machines and does not cover the range of physical, SaaS and database sources found in broader suites.
Key features
- Hyper-V, VMware and Proxmox support
- Single management console
- Perpetual per-host licences, unlimited sockets
- Monthly per-VM subscription option
- Free edition for 2 VMs per host
Pricing
Perpetual per host (Standard, Unlimited, Unlimited Plus) with Service Maintenance Agreement for support; monthly subscription per VM (Unlimited Plus only); free edition for 2 VMs per host; 30-day trial. Prices not shown.
Ownership and history
Acquired by Proofpoint on 8 December 2025 for US$1.8 billion total consideration.
- Owner
- Proofpoint (since 8 Dec 2025)
- Licensing
- Perpetual per host or monthly per VM
- Free edition
- 2 VMs per host
- Trial
- 30 days
Strengths
- Per-host perpetual licensing with unlimited VMs
- Permanent free edition
- Proxmox support alongside Hyper-V and VMware
- 30-day full trial
Limitations
- VM-focused, limited physical and SaaS coverage
- Support requires a separate maintenance agreement
- Prices not displayed
- Product roadmap now set within Proofpoint
13
Open-source-derived enterprise backup without capacity-based pricing
Best for: HPC, research and Linux-heavy data centres
Bacula Enterprise is developed by Bacula Systems, headquartered in Yverdon-les-Bains, Switzerland, and is derived from the open-source Bacula project. It is aimed at large and technically demanding environments, and the vendor names customers including NASA (through contractor SSAI), Sky, Swisscom, Warner Bros. Discovery, Booking.com and Texas A&M University.
Coverage is unusually wide at the infrastructure level: hypervisors including VMware, Hyper-V, KVM, OpenStack, Proxmox, Xen, XCP-ng and Nutanix AHV; containers on Docker, Kubernetes and OpenShift; databases including SAP HANA, Oracle, PostgreSQL and MySQL; tape, NDMP and NAS; and high-performance computing file systems such as GPFS, Lustre and HPSS. The product line includes the BWeb management interface, BGuardian security monitoring and a Sovereign Recovery offering. Bacula Systems states that it does not use capacity-based pricing, so costs do not rise with data volume, but it does not publish prices. The product's configuration model reflects its open-source roots and generally requires more administrator expertise than wizard-driven SMB tools.
Key features
- Hypervisors from VMware to XCP-ng and OpenStack
- Kubernetes, OpenShift and Docker backup
- SAP HANA and other database plugins
- Tape, NDMP and NAS support
- HPC file systems including Lustre and GPFS
- BGuardian security monitoring
Pricing
Quote-based. Bacula Systems states that it does not charge by data volume.
Notable customers
Named on the vendor's site: University of Ulm, NASA (via SSAI), Sky, Swisscom, Warner Bros. Discovery, Booking.com, Texas A&M University, Turner Studios.
- Headquarters
- Yverdon-les-Bains, Switzerland
- Basis
- Open-source Bacula
- Pricing
- Quote-based; not capacity-based
Strengths
- Licensing not tied to capacity
- Very wide platform and HPC coverage
- Open-source foundation reduces lock-in
- Strong tape support
Limitations
- Steeper learning curve
- No published prices
- Smaller partner network
- Less emphasis on SaaS application backup
14
Licence-free PC, server and VM backup on Synology NAS hardware
Best for: Small offices already running a Synology NAS
Active Backup for Business is a backup application that runs on Synology network-attached storage. Synology describes it as offering unlimited, licence-free backups for any number of computers, servers or virtual machines, which makes the hardware the main cost. It backs up Windows and Linux physical servers as well as computers and virtual machines.
For physical servers it offers bare-metal recovery, instant restore of a server to VMware vSphere, Microsoft Hyper-V or Synology Virtual Machine Manager, and P2V recovery that boots a backup image as a VM. Global deduplication and incremental backups reduce storage and transfer volumes; application-consistent backups use VSS and pre-freeze or post-thaw scripts; and users can restore their own files through self-service recovery. Backups can be replicated to another Synology NAS to follow the 3-2-1 rule. The limitations follow from the model: protection depends on Synology hardware, the product lacks the multi-site management, tape and enterprise application coverage of larger suites, and an offsite copy requires a second device or cloud target.
Key features
- Unlimited licence-free backups
- Bare-metal and instant restore to VMware or Hyper-V
- P2V recovery from backup images
- Global deduplication
- Self-service file recovery
- Replication to a second Synology NAS
Pricing
No licence fees for any number of computers, servers or VMs on a supported Synology NAS; the cost is the hardware and storage.
- Licensing
- Licence-free on supported Synology NAS
- Sources
- Windows/Linux servers, PCs, VMs
- Pricing
- Included with hardware
Strengths
- No per-device licence fees
- Instant restore to common hypervisors
- Global deduplication saves storage
- Simple administration in DSM
Limitations
- Tied to Synology hardware
- Offsite copy needs a second device or cloud
- Limited enterprise application coverage
- Single-site focus
Frequently asked questions
What is the best backup software for small business?
For a small business the deciding factors are usually cost and administration effort. Veeam Community Edition is free for up to 10 workloads, Synology Active Backup for Business is licence-free on Synology NAS hardware, and NAKIVO and Hornetsecurity VM Backup offer per-workload or per-host licences. Firms without IT staff often prefer SaaS services such as Druva or an MSP running N-able Cove or Datto.
What is the difference between backup software and cloud backup?
Backup software is licensed per workload and lets the organisation choose where copies are stored, including local disk, tape, object storage or a vendor cloud. Cloud backup services bundle a simple client with the provider's own storage and are typically priced per computer or per terabyte. Several products on this list, such as Druva and Cove, sit between the two because they deliver business backup as SaaS.
What is the 3-2-1 backup rule?
The 3-2-1 rule recommends keeping three copies of data, on two different types of media, with one copy offsite. Many vendors now describe extended versions that add an immutable or offline copy and verified restores. CISA's ransomware guidance similarly calls for offline, encrypted backups that are tested regularly, because attackers try to find and destroy accessible backups.
Is free backup software good enough for a business?
Free editions can protect a small number of systems adequately but carry limits. Veeam Community Edition covers up to 10 workloads without technical support, and Hornetsecurity VM Backup's free edition covers 2 VMs per host. Businesses that need support contracts, more workloads, SaaS backup or immutable cloud copies generally move to a paid edition.
Does backup software protect against ransomware?
Backup software does not prevent an attack, but it determines whether systems can be restored afterwards. Features that matter are immutable or air-gapped copies, malware scanning of backup data before restore, isolated recovery environments and regular restore testing. Commvault, Rubrik, Acronis, Datto and Unitrends all document one or more of these capabilities on their product pages.
How is business backup software priced?
Common licensing units are per workload, per machine, per CPU socket, per host and per user for SaaS applications. Enterprise vendors such as Commvault, Rubrik and Cohesity quote prices individually. NAKIVO publishes its licence structure with per-workload subscriptions and perpetual per-socket licences, Acronis licenses per machine with bundled cloud storage, and Synology charges nothing beyond the NAS hardware.
Which backup software supports Proxmox?
Vendors that name Proxmox VE support on their own pages include Veeam (including the free Community Edition), NAKIVO, Arcserve UDP, Hornetsecurity VM Backup, Bacula Enterprise and Druva's Essentials Pack. NAKIVO's release 11.2.2 added support for Proxmox VE 9.1 and 9.2. Buyers should confirm which Proxmox versions and features, such as incremental backup, each product supports.
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