Infrastructure, virtualisation & a secure private cloud

Proxmox • Nextcloud • Docker • OPNsense • ZFS — tailor-made solutions for businesses and private customers.

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Who is working for you

Ronald Wiesinger — electrician, RF engineer, a good 20 years in IT.

I have never settled for "that's just how it is" — if it does not fit, it gets made to fit. My projects grew out of exactly this attitude: a complete open-source platform that sets up, monitors and protects servers.

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My projects: MrRowie — your friend and helper

The mini server that looks after your business: set up, monitored and backed up — as if your IT partner were always on site.

The mini server

A compact powerhouse with Proxmox virtualisation and ZFS storage. Automatic snapshots preserve every state — accidentally deleted files are back in minutes. It runs whatever your business needs: from the file server to the private cloud.

MrsNanny

Watches health and availability around the clock, keeps the system up to date and alerts me before something breaks. The daily reports are written by a private AI on our own hardware — your data stays in-house. You notice only one thing: everything just works. With video →

MrMiyagi — the sleeping backup

The backup server is normally powered off. It wakes up on its own, fetches the backup, verifies it — and goes back to sleep. Ransomware cannot encrypt what cannot be reached. Details →

How does it work? →

Services

Planning, implementation, migration & ongoing care

Proxmox & virtualisation

Cluster design, HA, backup strategies and VM operations.

Nextcloud & private cloud

File synchronisation, collaboration and secure integration.

Containers & automation

Docker workflows, container deployments and CI/CD integration.

Network & security

Firewalls, VPN, segmentation and policy design with OPNsense.

Consulting & operations

Individual open-source strategies, monitoring & maintenance.

Backups & storage

ZFS, replication, recovery strategies and restore testing.

Philosophy

Short & personal — how I work and why customers trust me.

For more than a decade I have been planning, implementing and looking after infrastructures for small and medium-sized businesses as well as ambitious private customers. I rely exclusively on proven open-source technologies, so systems stay secure, transparent and sustainably operable — without vendor lock-in.

My focus is on clear, maintainable solutions: highly available virtualisation clusters, secure private clouds, lean container workflows and reliable backup/recovery strategies. Off-site backups are built in by default using automatic ZFS snapshots and ZFS replication — a game changer for reliable, incremental remote backups. Across my projects, only open-source tools are used — from the firewall to the orchestration.

Core competencies
  • Proxmox • cluster, HA & backup
  • Nextcloud • private file sharing
  • Docker • containerisation & CI/CD
  • OPNsense • network architecture
  • ZFS • snapshots & replication

More about me →