Project Stalwart - mail & collaboration server

Stalwart is an open-source mail & collaboration server with JMAP, IMAP4, POP3, SMTP, CalDAV, CardDAV and WebDAV support and a wide range of modern features.

https://stalw.art/ 

https://stalw.art/docs/install/platform/docker/ 

https://github.com/stalwartlabs/stalwart

Project Coriolis - V2V, P2V, V2C, P2C Tool

Coriolis is Cloud Migration as a Service.

Migrating existing workloads between clouds is a necessity for a large number of use cases, especially for user moving from traditional virtualization technologies like VMware vSphere or Microsoft System Center VMM to Azure / AzureStack, OpenStack, Amazon AWS or Google Cloud. Furthermore, cloud to cloud migrations, like AWS to Azure are also a common requirement.

You can find further information about the project Coriolis at GitHub - https://github.com/cloudbase/coriolis

Exos 4U74 and 4U100

I often build Software-Defined Storage systems, which require robust hardware with both high performance and large capacity. I have recently found that Seagate has ultra-dense SAS-4 JBOD systems combining next-gen Mozaic drive readiness with energy-efficient design for AI, edge, and sovereign data infrastructure. It supports up to 3.2PB in a single 4 RU enclosure.

Here are few pictures ...

 

AI Servers and Racks

I’m trying to explain that an AI Factory truly functions like a factory, and that it is a fundamentally different discipline from a traditional datacenter.

A picture is worth a thousand words, just look at the photos below. 

Ohm’s Law Analogies for Modern IT Infrastructure Performance

In electrical engineering, Ohm’s law is one of the cleanest and most intuitive relationships:

$$$$U = I x R

Voltage pushes current; resistance slows it down. But can we find something similarly elegant in IT infrastructure?

Computers and networks are more complex than a simple circuit. However, several concepts in networking, storage, and CPU performance behave similarly to Ohm’s law and can be modeled using comparable relationships. Below are practical, engineer-friendly analogies you can use when sizing, troubleshooting, or explaining systems.

IT Fundamentals

Distinguished engineer Kelsey Hightower explores why understanding fundamentals matters more than chasing trends, sharing lessons from 25 years in tech at HAProxyConf. 

This is a very good video about IT fundamentals. It covers IT fundamentals, IT Infrastrucutre, and DevOps/Automation way how to do a clever IT.  He covers even AI hype with MCP and very correctly points to fundamentals. Every IT Engineer should see this video.  

Series and parallel battery wiring

Battery systems often rely on combining multiple cells, but how you connect them determines the final voltage, current, and capacity. Series and parallel wiring follow simple electrical rules, yet they lead to very different behavior under load. This brief post will walk through the core differences so you can understand the impact of each configuration.