Cloud various reasons for Migration the Cloud : rising operating costs, new security requirements, or greater flexibility. A predictable, controlled migration is crucial, especially for complex system landscapes.
Anyone who operates systems that have grown over many years is familiar with the challenges. The infrastructure works, but it is no longer up to date. Updates are risky, hardware can no longer be procured, and expertise is leaving the company. Migration a new, clean environment—such as a VMware-based Cloud —makes sense from a technical standpoint, but is often not immediately possible. Classic Migration its limits, especially when changing hypervisors, such as from Hyper-V, KVM, or Proxmox to a VMware environment. Cold Migration also Migration clearly structured and reliable option Migration transferring physical systems to a virtual platform.
What distinguishes cold Migration other approaches
In cold Migration , virtual machines Migration transferred to a new Cloud while they are switched off. No data is transferred during operation, which prevents potential inconsistencies. This approach is particularly suitable for systems that cannot tolerate ongoing changes or require a clean break. It also allows the virtualization platform to be changed.
Platform-independent Migration a clear structure
A major advantage of cold Migration its technical independence from the source environment. By using VMware Cloud Availability (VCDA), the entire virtual machine is replicated directly without the need for a specific export format or additional third-party tools. This means that regardless of whether the VM was previously running on Hyper-V, Proxmox, KVM, or another hypervisor, the cloning process works automatically and entirely via the Netstream .
No intermediate steps with VMDK, OVF, or OVA are necessary. Tools such as Veeam, Acronis, or Clonezilla are also not required for this process. Migration in a structured manner using the VMware Cloud Availability Stack. This significantly reduces the complexity of preparation, which is particularly important in heterogeneous or historically grown environments.
After the import, the machine is initially provided in a separate resource pool in the target system. All components such as network adapters, firewall rules, data carriers or resource classes can be adapted and tested there before the machine is put into operation.
Netstream cold Migration from the following environments, Migration others:
- VMware vSphere or ESXi
- Microsoft Hyper-V
- Nutanix AHV
- Proxmox VE
- KVM based systems
- Bare metal systems
Prepare network, storage and security
The network connection can also be fully configured in advance. VLANs, gateways, NAT rules and VPN endpoints can be mapped with VMware NSX. An IPsec connection between the source and target systems is available for hybrid scenarios.
Various classes can be used in the storage area. The spectrum ranges from standard to IOPS-optimized SSD volumes. Allocation is made per virtual disk so that performance and costs can be specifically controlled.
An additional snapshot can be created before switching. This means that the original virtual machine remains available as a fallback option for a defined period of time. The productive start is scheduled, often outside normal operating hours.
Conclusion: Platform-independent Migration a clear structure
Cold Migration particularly Migration when systems need to be transferred to a new VMware environment independently of an existing infrastructure. Typical scenarios include switching from Hyper-V, Proxmox, or KVM to VMware, or virtualizing formerly physical servers. Since each virtual machine is started and migrated individually using a prepared image, the transfer is carried out sequentially and specifically for each system.
This method allows individual machines to be transferred to a new environment in a controlled manner, without having to consider compatibilities or dependencies within the source system. It is not necessary for the source and target environments to use the same virtualization technology. Network configurations, host names, and operating systems can be Migration and adjusted during the Migration process.
The target environment is based on VMware Cloud Director. It is multi-tenant capable and offers functions such as resource reservation, API control, role-based access management, backup integration and reporting as standard.
