How any-to-any migration eases the pain of migrating virtual machines

Migrating virtual machines isn’t getting any easier. In fact, it’s becoming more difficult. Gartner recently revealed that migrating away from VMware, for instance, is likely to be a time-consuming, risky and expensive task. The Register provided details from Gartner’s analysis:

“The assessment modelled the cost of migrating off VMware for an org that runs 2,000 or more VMs and at least 100 servers to host them and found projects will take 18 to 48 months. Each virtual machine will cost between $300 and $3,000 to migrate, if you engage external service providers.”

Those numbers obviously pertain to larger businesses. However, even scaled down, a business of any size is likely to find VM migration difficult and resource intensive. The issues is so pervasive that a Gartner expert told The Register that many VMware customers are essentially paralyzed right now, waiting for their peers to start migrations before taking them on. With all the waiting, nobody is actually migrating.

VM migration

VMware migration made simple: Reduce migration time by 60%

In the wake of tightening VMware licensing, rising costs, and reduced perpetual licensing options, many organizations are reconsidering their long-term commitment to vSphere-based infrastructure. Migration away from VMware — whether to open-source Proxmox VE, Microsoft Hyper-V, or public/private cloud platforms — is emerging as a strategic imperative, not just an operational project. Gartner data shows that VMware migrations can cost between $300 – $3 000 per VM and take 18 – 48 months without structured planning, illustrating the stakes for IT leaders evaluating alternative paths. This guide reframes migration not as a conceptual challenge but as a pragmatic, step-by-step playbook for “VMware to Proxmox,” “VMware to Hyper-V,” and “VMware to cloud” migration scenarios.

Recent shifts in VMware’s licensing model and support structure have increased the total cost of ownership for many on-premises deployments. Organizations that once relied on perpetual ESXi licences now face subscription-only pricing and aggregated costs for features like distributed networking and storage policies. In contrast, alternative platforms like Proxmox VE offer an open-source foundation without core-based licensing fees, and Hyper-V comes bundled with Windows Server licences, providing clear cost advantages for Windows-centric estates. Evaluating whether workloads can benefit from lower licensing costs, simplified scalability, and flexible infrastructure is a key reason VMware exit discussions have accelerated.

Difficult migrations aren’t just an issue with VMware Since the advent of VMs, migration has been a time-consuming, costly and fraught with peril. It has also left organizations open to downtime and security threats. A few factors make VM migration a major challenge:

Data breaches are a constant risk during migrations because the migration process can expose sensitive data to unauthorized access. Another potential pitfall is data loss, which can occur due to incomplete or corrupted data transfers. And then there is the potential for compatibility mismatches between source and destination environments. Each scenario individually or a combination of them can severely damage an organization’s ability to operate.

Of course, one of the issues surrounding migration is that they’re resource intensive. Traditional migration methods often require significant IT resources, including time, expertise and specialized tools. Then there’s the other big driver of costs: downtime. Extended downtime during the migration process can lead to lost productivity and a decline in revenue.

Complexity is an issue as well, with technical challenges throwing constant barriers in organizations’ migration paths. Migrating VMs between different environments — including on-premises to cloud and cloud to cloud — can be technically challenging for IT staffers and require extensive planning and expertise. Specifically, ensuring that VMs are compatible with the target environment can be a complex and time-consuming task.

• Data loss and corruption risk: incomplete migrations or missing validation steps.

• Compatibility mismatches: VMDK disk formats, NIC/driver differences, BIOS vs UEFI issues.

• Extended downtime: lack of effective cutover planning.

• Resource intensity: requiring significant time and expertise without automation.   

Moving from one migration vendor or platform to another massively increases the complexity and difficulty of the migration process. That’s why any-to-any migration, the ability to move seamlessly from any hypervisor or environment to any other, is extremely important.

Any-to-any migration enables organizations to move VMs between different environments — including on-premises, cloud, and hybrid — with ease, providing the flexibility organizations need to scale and adapt to business requirements. Plus, the ability to move VMs to more powerful or cost-effective environments ensures that businesses can optimize their resources and reduce costs, enabling them to reap the benefits of migration.

As businesses grow, the need to scale IT infrastructure becomes more pressing. Any-to-any migration enables seamless expansion and integration of new resources. Businesses can dynamically allocate resources based on workload demands, ensuring optimal performance and efficiency.

And then there is the ability to meet a constant need for disaster recovery. Any-to-any migration is essential for disaster recovery strategies, enabling businesses to quickly and easily restore operations in the event of a disaster. By having the ability to migrate VMs to different environments, businesses can also ensure redundancy and minimize the risk of downtime.

Inventory configuration: Document OS versions, VM specs, OS compatibility and networking.

• Remove VMware Tools: Plan for clean removal to avoid driver conflicts on target.

• Network mapping: Plan translation from VMware switches to Proxmox bridges.

Proxmox VE offers built-in import capabilities for ESXi VMs; the import wizard lets you connect to ESXi storage and bring VMs into Proxmox with minimal downtime, while qm disk import can convert VMDK into Proxmox formats on the fly.

• Missing guest drivers or incorrect NIC mappings can prevent VMs from booting.

• Incomplete UEFI/BIOS configuration translation between platforms can cause boot failures.

After importing, verify that all services start correctly, network connectivity aligns with expectations, and performance metrics match baselines. Use robust backups and validation tools to confirm data integrity.

Pre-Migration Planning Identify VMs to migrate, assess CPU/memory compatibility, and map network architectures. Converting VMware VMDKs to Hyper-V’s VHD/VHDX format is essential before cut-over.

1. Prepare Hyper-V hosts and storage.
2. Convert VMDK to VHDX using Microsoft Virtual Machine Converter or equivalent tools.
3. Transfer and import VMs, adjust NIC and integration services.

• Residual VMware Tools can conflict on Hyper-V.

• Improper BIOS/UEFI or virtual NIC settings can prevent startup.

After migration, verify application health, run network tests and reconfigure monitoring. Use comprehensive backups and agentless validation to ensure business continuity.

Traditional VMDK-centric approaches often ignore raw disk configurations and RDMs and may fail to recreate networks or storage layouts correctly, preventing VMs from booting without intervention.

Consider a file-system-level migration that captures guest OS data, updates bootloaders, and provisions drivers for the target cloud OS/instance. Run pilots in non-production to verify performance and compatibility.

Ensure VMs register with cloud services, auto-scaling and patching tools, and monitor security posture. Comprehensive backups help validate data integrity after cut-over.

By facilitating any-to-any migration, Acronis enables organization to safely and easily migrate VMs without breaking their budgets. Whether you’re transitioning from VMware to Nutanix or Hyper-V, Acronis provides a comprehensive migration solution that minimizes risks and maintains business continuity — with proven, comparative time savings of up to 60%. By implementing Acronis Cyber Protect for migrations, Acronis Professional Services delivers:  

Acronis Cyber Protect uses industry-leading advanced encryption to protect data both in transit and at rest, ensuring that sensitive information remains secure before, during and after the migration process. The solution guarantees zero data loss, ensuring that all critical information is safely transferred and remains intact.

By streamlining the migration process and minimizing preparation time, Acronis Cyber Protect can reduce the time required for migration by up to 60%, leading to significant cost savings. An agentless migration method minimizes complexity and preparation time, making the process more efficient and less resource-intensive. The result is that organizations spend both less time and less money on migrations and have a significantly reduced need to find and hire expensive experts.

At every step, Acronis Cyber Protect performs automated validation to ensure that the migration is proceeding as planned and that all systems are functioning correctly. For your peace of mind, migration experts from Acronis are available to guide you through the process, providing step-by-step support tailored to your needs and ensuring that every aspect of the migration is handled with care.

Acronis Cyber Protect supports a wide range of migration types, ensuring that you can migrate your VMs from any source to any destination. They include:

• Direct agentless migration: Migrate VMs directly without the need for agents, reducing setup time and complexity.
• Mass migration: Easily migrate multiple VMs simultaneously, ensuring that your entire infrastructure can be updated efficiently.
• Incremental migration: Perform incremental migrations to keep your systems up-to-date with minimal downtime.
• Cross-platform migration: Migrate VMs between different hypervisors and cloud platforms, ensuring compatibility and flexibility.

VM migration is a critical process that carries heavy risks. However, with Acronis Cyber Protect and Acronis Professional Services, organizations can overcome the challenges of migration and enjoy a seamless, secure, and cost-effective experience. Acronis Cyber Protect’s advanced data security, cost-effective approach and simplified process facilitate and simplify the process of any-to-any VM migration.

By leveraging the comprehensive features in Acronis Cyber Protect and expert support provided by Acronis Professional Services, you can confidently navigate the complexities of VM migration and optimize your IT infrastructure for the future.

VM migration

VMware migration made simple: Reduce migration time by 60%