VMware Exit FAQ
Your questions about migration.
The real questions CIOs and infrastructure managers ask before launching a VMware → Proxmox migration project.
VMware Exit FAQ
How long does a VMware → Proxmox migration take?
Timing depends on VM count, application dependencies, networking, storage and available change windows. As an indication, 20 to 50 VMs may fit into 4 to 8 weeks; estates above 200 VMs often span several months. The audit confirms the schedule, prerequisites and waves before any commitment.
Will production be down during the migration?
Not necessarily, but we do not promise zero downtime for every workload. Each wave defines the cutover method, any required interruption window and recovery checks. The VMware source remains available until the wave has been accepted.
What happens if something doesn't work after the migration?
Each wave has a rollback scenario, a decision point and a defined source retention period. Potential data loss depends on the selected replication method and RPO: it is measured and accepted before cutover, never assumed to be zero by default.
Do we need to replace existing servers?
Not necessarily. The audit checks CPU virtualisation, controllers, network interfaces, firmware, capacity, warranty and lifecycle. Hardware is reused only when it supports the target architecture and the accepted risk level.
Can every VMware workload move to Proxmox?
No. Appliances certified only for VMware, strong dependencies on NSX, vSAN or VCF, certain latency constraints and vendor support requirements need separate analysis. The audit classifies each workload as migratable, conditional, retained or redirected.
Is Proxmox suitable for enterprise infrastructure?
Yes, when the architecture and operating model are designed for the required service level. High availability, fencing, storage, backup, monitoring, security, capacity and support must be validated together. We do not present Proxmox as a component-for-component replacement for VMware.
How do you replace vSAN, NSX or VCF capabilities?
They are not replaced by one product. We decompose the actual use cases — distributed storage, microsegmentation, automation, virtual networking and operations — then define the required target components. Functional and operational gaps are validated in a POC before a decision.
What internal skills are required?
Operations require sound foundations in Linux, networking, storage, high availability and backup. We assess skills gaps, train the team and deliver operating procedures. The target level of autonomy is agreed with you; it is not assumed.
Can the migration be carried out progressively?
Yes. Wave migration is our standard approach: representative workloads, non-critical services, then more sensitive scopes. Each lot has mapped dependencies, GO / NO-GO criteria, a runbook and a documented rollback path.
How are backup and disaster recovery handled?
They are part of the target, not a later workstream. We test restores, define RPO and RTO targets, document recovery scenarios and verify that the team can operate them. A declared backup that has not been restored is not considered validated.
Does a VMware exit always reduce costs?
Not automatically. TCO must include subscriptions, hardware, storage, backup, migration, training and operations over three to five years. We compare those items with the VMware contract and actual estate to provide a range supported by explicit assumptions.
Can VSHIFT manage Proxmox subscriptions and support?
Yes. VSHIFT is a Proxmox partner with Authorized Reseller status. We can manage Proxmox VE and Proxmox Backup Server subscriptions, renewals and technical escalations through an identified point of contact.
How can we validate the target before touching production?
A POC reproduces the relevant constraints on VSHIFT Cloud or your infrastructure: performance, networking, storage, high availability, backup and operations. The GO / NO-GO decision is based on measurements and criteria agreed before testing.
What happens during the first discussion with VSHIFT?
We frame the scope, production constraints and the decision you need to make in a 30 to 45 minute technical discussion. You then receive a proposed next step: audit, architecture workshop or POC.
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