Infrastructure migrations · for small & mid-sized business in Europe
Per-core VMware subscriptions. Per-core Windows Server and SQL Server licences. Microsoft 365 seats that just went up again. We move you to open-source equivalents on a fixed price and a fixed date — cutover outside business hours, with a tested rollback at every step.
Savings calculator
Pick what you run today. The calculator applies each vendor's real licensing rules — core minimums included — and compares three years against the open-source equivalent.
Exchange rate used: 1 € = US$ (ECB reference rate, Sep 2026). Everything is calculated in your browser — nothing you enter is sent anywhere.
Why now
Vendors reprice on their schedule, not yours — and the open-source equivalents have quietly become the safe choice for the same workloads.
The tooling for these moves is mature — Proxmox ships a native VMware importer, PostgreSQL has well-trodden migration tools, Nextcloud has desktop and mobile sync clients. The risk sits in the planning and the cutover. That's the part we do.
Sources: partner-reported VMware pricing (Redress Compliance, AceMQ 2026 renewal research), Microsoft Windows Server 2025 and SQL Server 2025 pricing, Microsoft 365 price changes effective 1 July 2026, Proxmox and Nextcloud subscription pricing.
Migrations
Full inventory and dependency map, VM conversion with the Proxmox import tooling, VirtIO drivers for Windows guests, networks and storage mapped one-to-one, Proxmox Backup Server with tested restores, and an HA cluster where you need it.
File, web, print and application servers moved to Debian or Ubuntu — no core licences, no CALs, fewer forced reboots, the same services for your users.
Schema and data converted, application compatibility proven in a pilot, replication and backups set up — for the databases whose applications support PostgreSQL.
Files, calendars, contacts and chat on infrastructure you control — on-prem or with an EU hosting provider. Email stays with a proper mail provider.
Steady workloads that never needed a hyperscaler brought back to an EU host or your own servers — with a bill you can predict.
How a migration runs
Every server, VM, database and licence inventoried. You get a written plan and a fixed quote with a fixed date — before any work starts.
One or two non-critical systems move first. Performance, backups and restores are proven on your own workloads.
A runbook per wave, agreed maintenance windows, and a rollback path written down for every step.
Wave by wave, outside your business hours. If anything looks wrong, that wave rolls back — nothing on the old platform is deleted on the way.
Documentation, runbooks and full admin access. Run it yourself — or let our sister practice StayPatched keep it monitored and patched.
Nothing switches during your working day. Every wave has a rollback, and the old systems stay untouched until you've confirmed the new ones — a migration should never be the outage.
What you can hold us to
Agreed after the assessment and before work starts. No hourly meter running in the background.
Each step can be reversed. You never bet the company on a single night.
Evenings and weekends. Your team starts Monday on the new platform, not in the middle of a move.
Open-source stack, full admin credentials, written documentation. No lock-in — to a vendor or to us.
Straight talk
Who we are
Migratr is a European infrastructure practice for small and mid-sized companies. Our way of working comes from eight years of running IT for a 130-person company across three countries — including moving its own VMware estate to Proxmox: plan first, prove it on a pilot, cut over when nobody is working, keep a way back.
For larger projects we bring in additional vetted engineers. The plan, the price and the date stay ours to keep.
Sister practice of StayPatched · EU-based · serving Germany, Switzerland and the wider EU · English, with German available.
Questions
Each system is offline only during its own cutover window, scheduled outside your business hours and written into the plan before we start. The old platform stays untouched until you confirm the new one.
Usually not — Proxmox, Linux and PostgreSQL run on the servers you already have. Compatibility (controllers, NICs, storage) is checked during the assessment.
Then it stays where it is. The assessment separates what can move from what shouldn't — we never force an application onto a platform its vendor doesn't support.
They move to Proxmox as they are, with VirtIO drivers installed as part of the conversion. The procedure is proven on non-critical machines in the pilot first.
It depends on the estate. For a few servers it's typically weeks rather than months — and the completion date is fixed in the quote.
Yes. Running both side by side during the transition is normal, and some systems may stay where they are if that's the right call.
You get documentation, runbooks and full admin access and can run it yourself — or StayPatched keeps it monitored and patched.
Get a migration plan
A short call, then a written assessment: what moves as-is, what needs care, what should stay — with a fixed price and a fixed date. No obligation.