From VMware to what's next: Protecting data during hypervisor migration

From VMware to what's next: Protecting data during hypervisor migration

The VMware migration wave shows no signs of slowing down. Since Broadcom's acquisition of VMware in 2023, organizations have been actively seeking alternatives due to price hikes, licensing changes, and shifts in customer support. Recent operational problems, including VMware Workstation auto-updates failing due to Broadcom URL redirects, have only accelerated this trend.

Gartner research VP Julia Palmer recently predicted that VMware would lose 35% of its workloads by 2028. Many of those workloads will shift to platforms such as Microsoft Hyper-V, Azure Stack HCI, Nutanix AHV, Proxmox VE, or KVM. However, this journey comes with significant challenges that IT teams must navigate carefully.

Why hypervisor migration is technically risky

At first glance, migrating from one hypervisor to another seems straightforward: export data, convert it to a new format, and import it into the new platform. However, this process is far riskier than it appears. Hypervisors don't interoperate seamlessly, and multiple technical variables increase the risk of failed or unstable migrations.

Hypervisors differ in disk formats, hardware abstractions, driver stacks, and networking models. Virtual hardware versions, storage controllers, chipset emulation, and network virtualization layers don't always translate cleanly between platforms. Snapshots and templates behave differently across hypervisors, and even subtle configuration differences can create instability that only surfaces once workloads are under real production pressure.

The hidden costs of delayed migrations

Every delayed VMware migration costs more than organizations realize. Beyond the immediate financial impact, delayed migrations increase operational risk and limit strategic options. Organizations find themselves locked into increasingly expensive licensing models while competitors move to more flexible platforms.

Acronis Cyber Protect offers IT leaders control with a flexible, AI-powered cyber protection platform that can cut migration time by up to 60% while keeping business operations secure and responsive throughout the transition.

Backup: The essential prerequisite for successful migration

The most important prerequisite for any platform migration isn't a conversion tool—it's verified, restorable backup. Organizations need to protect workloads with full-image, application-consistent backups that IT professionals can restore not only to the same hypervisor but to dissimilar hardware or an entirely different virtualization platform.

IT teams must perform recovery drills before starting migration, not just after cutover. A platform-agnostic backup architecture provides a necessary safety net, enabling restoration from the source environment to the destination environment and allowing rapid reversion to the original platform if compatibility or performance issues arise.

Any-to-any hypervisor recovery—restoration from physical, virtual, or cloud environments to any other destination—reduces migration risk and has the added advantage of reducing long-term vendor lock-in.

Three underestimated risks during migration

Even the most carefully planned migrations can fail for predictable reasons. Understanding these risks is crucial for successful transitions.

1. Underestimating planned downtime

Teams often plan for ideal downtime scenarios rather than worst-case scenarios. Unfortunately, migrations frequently stretch beyond maintenance windows. If a window closes when systems aren't stable, organizations can suffer missed transactions, stalled operations, SLA violations, and reputational damage.

Migration planning must include a formal business continuity strategy. Teams should ask in advance: How long can each workload realistically be offline? What happens if rollback is required? Who makes the go or no-go decision? What is the communication plan if restoration time exceeds expectations?

Backup and recovery are critical safety nets. The ability to quickly restore workloads to their original platform can mean the difference between a short delay and a multi-day outage.

1. Backup and recovery gaps

Migration creates a dangerous gray zone for backup and disaster recovery, with environments often split between old and new platforms. That's when recoverability must be strongest.

Common gaps appear when backup chains are broken during VM exports, incremental backup jobs fail after platform conversion, application-consistent snapshots aren't validated on the new hypervisor, or DR replication targets aren't synchronized during phased cutovers.

Backup and recovery must function continuously throughout the migration. IT teams need to maintain parallel protection during overlap periods so that workloads are recoverable from both the legacy and target platforms until the transition is complete.

1. Expanding attack surface

Migration also expands your attack surface. With two hypervisor stacks running, complexity spikes. Backup repositories, particularly image-level backups, can become high-value targets for attackers.

If attackers compromise backup repositories during migration, rollback and recovery options disappear. Immutability becomes essential during this phase. IT teams need to protect backup images against modification or deletion, even by privileged accounts.

Role-based access controls must be tightened, and administrative access should be limited. Equally important is adherence to the 3-2-1 principle: at least three copies of data on two different media types, with one copy stored off-site or offline.

During migration, that third copy becomes critical insurance. If both production and primary backup infrastructure are affected, an isolated copy preserves your recovery path.

The value of unified protection platforms

Maintaining parallel protection is essential because it lowers operational risk, but it also increases management complexity. Two hypervisor stacks, multiple storage systems, and parallel protection policies must coexist without creating gaps.

A unified cyber protection platform can simplify this process for IT teams. By delivering consistent backup, recovery, and security controls across physical servers, hypervisors, and cloud workloads through a single point of control, these platforms reduce complexity while maintaining comprehensive protection.

Natively integrated protection and migration capabilities can reduce transition timelines while maintaining rollback readiness and continuous synchronization.

Migration as a resilience opportunity

The shift away from VMware has made one concept clear: migration planning is a long-term competency, not a one-time project. Teams that succeed treat hypervisor transitions as resilience exercises.

They validate backups in advance, ensure cross-platform recovery capability, maintain rollback paths, harden backup storage against ransomware, and verify data integrity after cutover. With these safeguards in place, migration becomes more predictable and significantly more likely to succeed.

VMware migrations don't have to be slow, risky, or disruptive. With the right tools and strategies, organizations can accelerate migration while delivering AI-powered security, backup, and recovery in one natively integrated solution.

For organizations planning a move away from VMware, the key is to approach migration not as a technical challenge alone, but as a comprehensive business continuity exercise that requires careful planning, robust backup strategies, and continuous protection throughout the transition process.