In my previous post, I covered the new features in Proxmox Backup Server 4.0. Released simultaneously, Proxmox Virtual Environment (VE) 9.0 also merits attention. It runs on Debian 13 Trixie with Kernel 6.14 and includes updated QEMU, LXC, ZFS, and Ceph versions. More significantly, it introduces modifications affecting storage management, networking, and high availability within your virtual setup. This article examines these updates more closely, providing commands and examples you can test on your own system.

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Proxmox Backup Server (PBS) 4.0 is here with a new Debian 13 base, updated kernel, native S3-compatible storage, and useful improvements for managing backups. This release gives you more choices for where to store data and simplifies tasks like using removable drives or syncing to off-site locations. In this post, I will walk you through crucial new features, show the commands you can run, and provide a short upgrade checklist.

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If you forget the root password for ESXi, VMware recommends reinstalling ESXi. In smaller environments without automated rollouts and central profiles, you must then configure all settings manually. Alternatively, you can reset the password using an unofficial method.

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Migrating a Hyper-V host from Windows Server 2019 Core to Windows Server 2025 requires attention beyond just the virtual machines. The host's configuration is equally essential and includes network cards, vSwitches, and default paths, all of which need to be transferred accurately. Using Windows PowerShell, you can export key settings and restore them on a new server.

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Windows Server 2025 can run Windows and Hyper-V containers. The former share resources like the kernel with the host OS and have process-level isolation, while the latter run in virtual machines. To enable communication between containers and with physical systems, you must configure the network accordingly.

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In my previous article, I introduced Apple's new Containerization solution for macOS and compared it with Docker Desktop. In today's post, I'll explain how to install Apple’s new Container CLI—a Swift‑based, open‑source tool—for running OCI‑compliant Linux containers on your Mac. Native container support will launch in macOS 26 (Tahoe), but you can install and utilize the Container CLI on macOS 15 with certain limitations. In the step‑by‑step guide, I will explain how to install, configure, and start running containers with Apple’s fresh alternative to Docker Desktop.

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At WWDC 2025, Apple announced the Containerization Framework and Container CLI, a solution for creating and running Linux containers as lightweight virtual machines on Mac. This article is geared toward developers, sysadmins, and DevOps engineers who want to understand how Apple Container works under the hood and how it compares to Docker Desktop.

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Entering a PIN is one of the authentication methods available through Microsoft’s Windows Hello. It offers a simplified sign-in experience, especially for devices that lack biometric capabilities. This option must be explicitly enabled in domain-joined environments or those using Entra ID. However, its functionality is significantly restricted on virtual machines hosted on Hyper-V.

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Windows Server 2025 introduced several advancements that make containerized workloads more flexible, secure, and customizable. One notable feature is the addition of Features on Demand (FoD) in Nano Server containers. This feature allows you to customize Nano Server containers by adding only the necessary components while keeping your container images small and optimized. In this guide, we’ll explore how to enable and use Features on Demand within Nano Server containers, providing real-world use cases that demonstrate this feature's power. We will also examine how it impacts container image sizes.

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Instead of walking through the entire wizard in Hyper-V Manager to create a virtual machine, you can speed up the process using Quick Create. By default, this tool uses virtual hard disks (VHDX) provided by Microsoft. Alternatively, you can set up a custom gallery and populate it with your own images.

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