This article explains XenServer's high‑performance virtualization features, OVF/OVA export capabilities, snapshot‑based backup methods, disaster‑recovery replication, XenCenter management console functions, integration with Microsoft System Center, and the open XenAPI that enables third‑party automation.
This article explains the fundamentals of container technology, compares containers with virtual machines, describes how containers are managed and deployed using tools like Docker and CoreOS, and shows how container clusters improve resource utilization and scalability in modern DevOps environments.
This article outlines a step‑by‑step methodology for migrating existing services to a virtualized infrastructure, covering performance assessment, test‑environment validation, incremental rollout, full deployment, and constructing business pressure models, with special insights for game‑related workloads.
This article shares practical guidance on moving existing business workloads to a virtualized environment, covering project planning, KVM technology selection, monitoring, disaster recovery, and cloud migration, while highlighting cost savings, rapid deployment, and how to gain stakeholder support.
The article explains the evolution of enterprise IT infrastructure toward both custom, small‑scale distributed designs driven by cloud computing and integrated fusion/hyper‑converged architectures, detailing their design principles, differences, major vendor solutions, and the role of software‑defined storage.
The article explains VMware vSphere as a cloud‑based data‑center virtualization suite, detailing its main components such as ESXi, vCenter, vSphere Client, and Web Access, and covering disaster recovery, backup technologies, storage APIs, and various storage provisioning methods like vSAN, VMFS, RDM, NFS/CIFS and vVol.
This article examines why cloud virtual machines can achieve lower failure rates than physical servers by leveraging large‑scale operations, kernel optimization, hot‑patching, live migration, and proactive hardware quality management, while highlighting the challenges smaller organizations face.
This article traces the seven‑year evolution of cloud computing from the early public‑vs‑private debate and open‑source battles to the Docker‑driven 2.0 era, highlighting shifts in business models, data as a core asset, and emerging trends in data‑center design.
The article reviews Docker’s role in OS‑level virtualization, tracing its history, current market dominance, community statistics, common use cases, future directions, acquisition strategy, and potential threats from competitors and acquisitions, while summarizing insights from recent interviews with Docker users and experts.
This comprehensive syllabus outlines a 15‑phase curriculum covering Linux fundamentals, shell scripting, network services, security, databases, clustering, virtualization, cloud platforms, automation tools, system tuning, big‑data processing, and professional development for IT practitioners.
This article explains what containers are, how they differ from virtual machines, introduces Docker as an open‑source container engine, and outlines common Docker use cases such as development, testing, isolated environments, and large‑scale deployments.
This article summarizes a China Mobile cloud computing talk covering the company’s vision for private and public clouds, core technologies such as lightweight virtualization, distributed scheduling and coordination, the evolution from “small cloud” to “big cloud”, practical reflections on implementation, and strategic recommendations for future development.
This article explains the concept, implementation details, and practical limitations of Multi‑tenant JVM technology, showing how it enables high‑density Java deployments, improves startup times, and isolates resources and data for multiple tenants within a single JVM instance.
This tutorial walks through installing Xen virtualization on a CentOS 6.6 system, covering environment setup, required packages, kernel configuration, bridge networking, libvirt tools, and creating and cloning virtual machines using command‑line utilities.
This article explains the architecture and inter‑service communication of OpenStack, detailing each core component, the REST and RPC interactions, and demonstrates practical request flows for creating and shelving instances using nova‑client with debug output and relevant code excerpts.
This article compares Docker and Vagrant, outlining their distinct use cases, strengths, and limitations, and explains why Vagrant is better for managing virtual machines while Docker excels at rapid application development and deployment in containerized environments.
An in‑depth overview of VMware’s extensive product lineup—including data‑center and cloud infrastructure tools, management suites, desktop virtualization, and free utilities—explains each solution’s purpose, key features, and typical use cases for enterprises and individual users alike.
