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Franz Korbjuhn
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Articles

Category: Infrastructure

Networks, servers, virtualisation and server moves: experience from infrastructure projects in small and mid-sized companies.

Desk phones, a fax machine and an on-site phone system, connected through a secured device to the cloud, which serves a headset and a smartphone
Infrastructure

Cloud phone system: 3CX, Teams Phone or Cloud PBX?

When I recommend 3CX, when Teams Phone, what a cloud phone system costs per workstation and where a switch can go wrong: lessons from around 20 phone systems I have set up.

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Server move: data moves from the old server to the new one, with the workstations connected
Infrastructure

Server move in one day: why the preparation takes longer than the move

A new server, a new domain, every workstation moved across and normal work the next morning. What has to happen beforehand, what the schedule and fallback plan look like, and where the time really goes.

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One network for several companies at one site: three separate network zones with a shared firewall and a shared printer
Infrastructure

Several companies, one site: how to share a network cleanly

A shared internet connection and firewall, separate networks and a Microsoft 365 tenant for each company. What is shared, what stays separate, how costs are split and where such projects are most likely to snag.

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A server virtualised with Proxmox, with a local backup and a separate copy in a data centre
Infrastructure

Proxmox in business: why I virtualise new servers with it

Proxmox VE is my standard for new virtualisation in small and medium-sized companies. How a move from VMware or Hyper-V works, how I set up backup in two stages, what applies to Windows Server and when I stay with the existing platform.

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