Linux & Automation
Practical guides for Linux administration, troubleshooting, automation, networking, system performance, Docker, and Ansible.
HPC & Slurm
Hands-on guides for High-Performance Computing environments, focusing on Slurm administration and day-to-day HPC operations.
VMware & Virtualization
Practical VMware infrastructure guides covering ESXi, vCenter, vSAN, NSX, virtual networking, and data center issues.
Patching the VMware vCenter Server Appliance (VCSA) updates its software and can address product defects and security issues. This guide explains how to apply a full patch ISO from the Appliance Shell by staging its packages, reviewing the staged release,…
Virtualization
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This guide demonstrates how to install the Dell PowerFlex Storage Data Client (SDC) on a VMware ESXi host, connect it to a PowerFlex MDM cluster, map PowerFlex volumes, and create VMFS6 datastores from those volumes. The procedure below reflects a nested lab, not a production design. The lab used PowerFlex 4.5.2 and ESXi 8.0.3, build 24022510. Before reproducing it, verify…
This hands-on lab shows how to deploy a nested Dell PowerFlex 3.6.4 cluster on VMware vSphere. The environment uses virtual machines to model PowerFlex storage nodes, a five-node MDM cluster, VLAN-separated traffic, a PowerFlex Gateway, a Presentation Server, and Windows and ESXi Storage Data Clients (SDCs). Lab warning: This is a nested learning environment. It is intended to demonstrate PowerFlex…
This guide describes a lab deployment of the Dell PowerFlex Management Platform (PFMP) on Linux. It covers the temporary installer VM, the configuration file, the three-node management cluster, and initial access to the web interface. The original lab was built with a PFMP2-4.5.2.0-173.tgz installer archive and a CentOS 9-based installer VM. Treat those as the versions used in that lab,…
Patching the VMware vCenter Server Appliance (VCSA) updates its software and can address product defects and security issues. This guide explains how to apply a full patch ISO from the Appliance Shell by staging its packages, reviewing the staged release, installing the update, and rebooting the appliance. The patch process interrupts vCenter Server services and requires a maintenance window. Before…
Introducing the Dell PowerFlex Solution provides an overview of Dell PowerFlex, a software-defined storage platform designed for modern data center environments. The solution combines storage and compute resources into a flexible architecture focused on performance, scalability, and operational efficiency. In this article, we will explore the main components that build the PowerFlex software architecture, including Meta Data Manager (MDM), Storage…