Should you build or buy Backup & Recovery (Server, VM & Endpoint)?
Server, VM, and endpoint backup software protects against data loss from hardware failure, ransomware, and human error by copying workloads to separate storage on a schedule, with recovery tooling to restore them. IT and infrastructure teams buy it to cover data centers and fleets of physical and virtual machines against outages.
Buy the platform that covers your whole estate and can demonstrate a tested recovery, and negotiate on workload count. Use PBS, ZFS or Velero where they fit a single platform, but keep a supported recovery layer for the workloads and ransomware scenarios an internal stack cannot prove it handles.
Build it, buy it, or bridge?
When building makes sense
Open-source backup is genuinely running in production, not just in home labs. The Municipality of Padua runs Proxmox VE with Ceph and Proxmox Backup Server across up to 250 VMs and more than 400 terabytes of backup capacity, and Ghent University moved off NetBackup onto Bacula for petabyte-scale recovery. Lab Logistics Group runs 50 terabytes to tape on Bareos across mixed workloads. What these cases share is a homogeneous platform and an infrastructure team that already knows the underlying storage layer, Ceph, ZFS, or a similar system, before backup gets added on top. Building clears the bar when your estate runs on one virtualization platform you control end to end and you have the storage expertise to validate recovery yourself. It doesn't clear the bar when you need central anomaly detection, isolated recovery testing, or auditable workflows across a mixed fleet, because that's exactly the layer open tools still lack and vendors bundle as the product.
When buying makes sense
A modeled 100-VM, 50-terabyte comparison puts a do-it-yourself stack at $142K-$285K over three years, against roughly $121K-$196K for Veeam and $286K-$339K for Rubrik at the same scale, so the packaged option isn't the expensive choice it's often assumed to be. Even the largest named open-source deployments end up on a paid support tier: the University of Ulm runs 16 petabytes on Bacula Enterprise, and Warner Bros. Discovery does the same, both choosing vendor support once scale and risk get serious. What buying actually gets you is central anomaly detection, isolated recovery testing, and audit-ready workflows across a mixed estate of servers, VMs, and endpoints, capabilities that take real engineering effort to replicate and that most infrastructure teams have no reason to build themselves. Buy the platform that covers your whole estate, negotiate on workload count, and demand a tested recovery before you sign rather than trusting the datasheet.
The desk read
Build-versus-buy analysis for Backup & Recovery (Server, VM & Endpoint) is being written. In the meantime, the framework that drives every B4 call is on the B4 Index page.
Frequently asked
What is server, VM, and endpoint backup software?
Backup software copies servers, VMs, and endpoints to separate storage on a schedule so IT teams can restore after hardware failure, ransomware, or human error. A modeled 100-VM comparison puts a self-built stack at roughly the same three-year cost as Veeam's packaged platform.
Is open-source backup actually usable in production?
Yes, at real scale. The Municipality of Padua runs Proxmox Backup Server across up to 250 VMs and 400+ terabytes, and Ghent University moved off NetBackup onto Bacula. But the largest deployments, University of Ulm at 16 petabytes, Warner Bros. Discovery, both run on paid enterprise support rather than the free tier.
Why buy when open-source alternatives exist?
A modeled 100-VM comparison puts DIY at $142K-$285K over three years, in the same range as Veeam's packaged pricing, so there's no clear cost win. What buying adds is anomaly detection, isolated recovery testing, and audit-ready workflows that open tools don't bundle on their own.
When does building make sense for backup?
When your estate runs on one virtualization platform you already operate and your team has existing Ceph or ZFS storage expertise. Outside that combination, the engineering effort to prove recoverability tends to cost more than it saves.
What are the main backup and recovery vendors?
Representative vendors include Cohesity DataProtect, Commvault Cloud, Rubrik Security Cloud, Veeam Data Platform. B4 Pro includes the category score and the full vendor list.