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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

3CX or Teams Phone: which cloud phone system suits your business?

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: what needs planning beforehand

A project from 2025: a new server, a new domain and every workstation moved across in one day. 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: keeping the network and access separate

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: planning operation, backup and migration

When Proxmox VE suits 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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