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Xen Project

Xen Project — bare-metal hypervisor that refuses to die What it is Xen Project is a type-1 hypervisor that’s been in use for more than 20 years. It started as an academic experiment in Cambridge, later became the base for many VPS platforms, and even powered AWS EC2 for years. Today it’s still maintained under the Linux Foundation. Not as trendy as KVM, but still useful if you need a small, security-focused hypervisor or want to separate workloads at the hardware level.

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Xen Project — bare-metal hypervisor that refuses to die

What it is

Xen Project is a type-1 hypervisor that’s been in use for more than 20 years. It started as an academic experiment in Cambridge, later became the base for many VPS platforms, and even powered AWS EC2 for years. Today it’s still maintained under the Linux Foundation. Not as trendy as KVM, but still useful if you need a small, security-focused hypervisor or want to separate workloads at the hardware level.

How it works (real view)

– Runs directly on hardware — not a hosted hypervisor.
– There’s a Dom0 (control domain, usually Linux) that handles device drivers and VM lifecycle.
– Guest VMs are DomU. They can be Linux, Windows, BSD, others.
– Supports PV (paravirtualized guests), HVM (hardware virtualization), and PVH (a hybrid that’s more common now).
– Tooling: native xl commands or libvirt. GUI support is thin, most admins live in config files and CLI.

Technical map

Area Notes
Type Type-1 (bare metal)
Control Dom0 (Linux)
Guests Linux, Windows, BSD, Solaris
Modes PV, HVM, PVH
Networking Bridge, NAT, SR-IOV, OVS
Storage Local, LVM, NFS, iSCSI
Features Live migration, NUMA, snapshots (via storage)
License GPLv2
Typical use VPS, embedded, security-oriented systems

Deployment notes

– Needs hardware virtualization enabled for HVM guests.
– Install a Xen-enabled Linux (Debian, CentOS, etc.) and boot with the Xen kernel.
– Admin tasks handled from Dom0 — either with xl or through libvirt.
– PV drivers still matter for performance in some Windows/Linux guests.
– Can tie into OpenStack or Xen Orchestra for orchestration.

Where it’s still used

– Cloud/VPS providers: legacy stacks still running Xen.
– Security projects: minimal hypervisor core = smaller attack surface.
– Embedded and automotive: hardware partitioning, real-time scheduling.
– Labs: research on OS/hypervisor interaction.

Weak points

– Smaller community, slower pace compared to KVM.
– Hardware/driver support lags.
– Setup is more complex than Proxmox or Hyper-V.
– PV mode is legacy; PVH is the only realistic option going forward.

Quick comparison

Tool Distinct trait Best fit
Xen Project Small core, PV legacy, long history Security setups, embedded, VPS legacy
KVM In-kernel, fastest development Linux clouds, modern datacenters
VMware ESXi Enterprise polish, ecosystem Enterprise virtualization
Hyper-V Windows integration Microsoft-first shops

Quick start sketch

1. Install Xen kernel on Linux host.
2. Reboot into Xen (Dom0).
3. Create guest config files, run xl create.
4. Add PV drivers inside guest.
5. For multiple hosts, use Xen Orchestra/OpenStack.

Field notes — 2025

– Xen is no longer the “default” hypervisor, but it’s not dead either.
– Security teams still like it because the trusted computing base is small.
– Good for embedded devices, where you don’t want a heavyweight stack.
– If you expect polish or rich GUIs — this is not it. Xen assumes you’re fine living in text configs.
– Migration away from PV to PVH is happening; if you’re starting fresh, avoid PV mode entirely.

Xen Project admin guide for snapshots and r | Virtacontainer

What is Xen Project?

Xen Project is an open-source virtualization platform that allows users to run multiple virtual machines (VMs) on a single physical host. It is a popular choice among enterprises and organizations due to its flexibility, scalability, and security features. With Xen Project, users can create and manage multiple VMs, each with its own operating system and applications, on a single physical server.

Main Features

Xen Project offers several key features that make it an attractive choice for virtualization and containerization. Some of the main features include:

  • Support for multiple VMs on a single physical host
  • Live migration of VMs between hosts
  • High-performance networking and storage
  • Support for various operating systems, including Windows, Linux, and Unix

Installation Guide

System Requirements

Before installing Xen Project, ensure that your system meets the following requirements:

  • 64-bit CPU with virtualization extensions (Intel VT-x or AMD-V)
  • At least 4 GB of RAM
  • At least 20 GB of free disk space

Installation Steps

Follow these steps to install Xen Project:

  1. Download the Xen Project installer from the official website
  2. Run the installer and follow the prompts to install Xen Project
  3. Configure the network and storage settings as desired
  4. Install the Xen Project tools and utilities

VM Snapshots and Restore Points

Creating Snapshots

Xen Project allows you to create snapshots of your VMs, which can be used to restore the VM to a previous state in case of a failure or error. To create a snapshot, follow these steps:

  1. Log in to the Xen Project management interface
  2. Select the VM you want to snapshot
  3. Click on the

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Xen Project deployment notes for clusters | Virtacontainer

What is Xen Project?

Xen Project is a free and open-source virtualization platform that allows users to run multiple virtual machines (VMs) on a single physical host. It is a type-1 hypervisor, also known as a bare-metal hypervisor, which means it runs directly on the host machine’s hardware without the need for a host operating system. This approach provides better performance, security, and reliability compared to type-2 hypervisors.

Xen Project supports a wide range of guest operating systems, including Linux, Windows, and BSD. It is widely used in cloud computing, virtual private servers (VPS), and other applications where multiple VMs need to be run on a single host.

Key Features of Xen Project

Virtualization

Xen Project provides a robust virtualization platform that allows users to create and manage multiple VMs on a single host. Each VM runs its own operating system and has its own virtualized hardware resources, such as CPU, memory, and storage.

Security

Xen Project provides a high level of security through its use of virtualization. Each VM is isolated from the others and from the host machine, preventing malware and other security threats from spreading between VMs.

Performance

Xen Project provides high performance through its use of paravirtualization, which allows the guest operating system to communicate directly with the host machine’s hardware. This approach provides better performance than full virtualization, where the guest operating system runs on a simulated hardware environment.

How to Automate Xen Project

Using Xen Orchestra

Xen Orchestra is a web-based management interface for Xen Project. It provides a user-friendly interface for creating and managing VMs, as well as automating tasks such as backups and rollbacks.

Using Ansible

Ansible is a popular automation tool that can be used to automate Xen Project. It provides a simple and flexible way to automate tasks such as VM creation and management.

Self-Hosted Platform with Immutable Storage and Rollbacks

Immutable Storage

Xen Project provides immutable storage, which means that once data is written to storage, it cannot be modified. This approach provides a high level of data integrity and security.

Rollbacks

Xen Project provides rollbacks, which allow users to revert to a previous version of a VM in case something goes wrong. This approach provides a high level of reliability and fault tolerance.

Download Xen Project Free

Xen Project is free and open-source software, which means that it can be downloaded and used free of charge. It is available for download from the official Xen Project website.

Xen Project Alternative

KVM

KVM (Kernel-based Virtual Machine) is a popular alternative to Xen Project. It is a type-1 hypervisor that runs on Linux and provides a high level of performance and security.

VMware

VMware is a commercial alternative to Xen Project. It is a type-1 hypervisor that provides a high level of performance and security, but requires a license fee.

FAQ

What is the difference between Xen Project and KVM?

Xen Project and KVM are both type-1 hypervisors, but they have some differences in terms of architecture and features. Xen Project is more mature and widely used, while KVM is more lightweight and easier to use.

Is Xen Project free?

Yes, Xen Project is free and open-source software, which means that it can be downloaded and used free of charge.

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Proxmox VE deployment notes for clusters | Virtacontainer

What is Proxmox VE?

Proxmox VE is an open-source virtualization platform that enables users to create, manage, and monitor virtual machines and containers. It is a self-hosted platform with immutable storage and rollbacks, providing a secure and reliable environment for virtualization and containerization. With Proxmox VE, users can automate their virtualization workflow, create snapshots and restore points, and encrypt their data for added security.

Main Features

Some of the key features of Proxmox VE include:

  • Support for KVM and container virtualization
  • Immutable storage with rollbacks
  • VM snapshots and restore points
  • Encryption for secure data storage
  • Web-based management interface
  • API for automation and integration

Installation Guide

System Requirements

Before installing Proxmox VE, ensure that your system meets the following requirements:

  • 64-bit CPU with virtualization support
  • Minimum 4 GB RAM
  • Minimum 10 GB disk space
  • Supported Linux distribution (e.g., Debian, Ubuntu)

Download and Installation

To download and install Proxmox VE, follow these steps:

  1. Download the Proxmox VE ISO file from the official website.
  2. Create a bootable USB drive or CD/DVD.
  3. Boot from the USB drive or CD/DVD and follow the installation wizard.
  4. Configure the network and storage settings.
  5. Complete the installation and reboot the system.

Technical Specifications

Virtualization Support

Proxmox VE supports both KVM and container virtualization:

Virtualization Type Description
KVM Kernel-based Virtual Machine (KVM) is a full virtualization solution that provides a high level of isolation and performance.
Container Container virtualization provides a lightweight and portable way to deploy applications and services.

Storage and Networking

Proxmox VE supports a variety of storage and networking options:

  • Local storage (e.g., SATA, SAS, NVMe)
  • Shared storage (e.g., iSCSI, NFS, Ceph)
  • Networking (e.g., VLAN, bonding, IPv6)

Pros and Cons

Advantages

Some of the advantages of using Proxmox VE include:

  • Open-source and free to use
  • Highly scalable and flexible
  • Support for multiple virtualization formats
  • Web-based management interface

Disadvantages

Some of the disadvantages of using Proxmox VE include:

  • Steep learning curve for beginners
  • Requires technical expertise for advanced configurations
  • Not suitable for very large-scale deployments

FAQ

What is the difference between Proxmox VE and other virtualization platforms?

Proxmox VE is an open-source platform that provides a unique combination of virtualization and containerization features, making it an attractive option for users who want a flexible and scalable solution.

How do I automate Proxmox VE?

Proxmox VE provides an API and a variety of automation tools, such as Ansible and Puppet, that enable users to automate their virtualization workflow and integrate with other systems.

Is Proxmox VE secure?

Yes, Proxmox VE provides a secure environment for virtualization and containerization, with features such as encryption, access control, and regular security updates.

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Hyper-V backup-ready setup and rollback che | Virtacontainer

What is Hyper-V?

Hyper-V is a virtualization technology developed by Microsoft that allows users to create and manage virtual machines on a single physical host. It was first released in 2008 as a part of Windows Server 2008 and has since become a popular choice for organizations looking to virtualize their infrastructure.

Hyper-V provides a robust and scalable platform for deploying virtual machines, with features such as live migration, high availability, and disaster recovery. It also supports a wide range of guest operating systems, including Windows, Linux, and others.

Main Benefits of Hyper-V

Hyper-V offers several benefits to organizations, including:

  • Improved resource utilization: By allowing multiple virtual machines to run on a single physical host, Hyper-V can help organizations make the most of their hardware resources.
  • Increased flexibility: Hyper-V provides a flexible platform for deploying virtual machines, with support for a wide range of guest operating systems and hardware configurations.
  • Enhanced security: Hyper-V provides a range of security features, including encryption and access controls, to help protect virtual machines and their data.

Installation Guide

System Requirements

Before installing Hyper-V, you’ll need to ensure that your system meets the following requirements:

  • Hardware: Hyper-V requires a 64-bit processor with second-level address translation (SLAT) capabilities.
  • Operating System: Hyper-V is supported on Windows Server 2012 and later, as well as Windows 10 and later.
  • Memory: Hyper-V requires a minimum of 2 GB of RAM, although more is recommended.

Installation Steps

To install Hyper-V, follow these steps:

  1. Enable Hyper-V: Open the Turn Windows features on or off dialog box and check the box next to Hyper-V.
  2. Install the Hyper-V Role: Use the Server Manager to install the Hyper-V role on your server.
  3. Configure Hyper-V: Use the Hyper-V Manager to configure your virtual machines and network settings.

Migration Guide with Restore Points and Recovery Planning

Why Migrate to Hyper-V?

Migrating to Hyper-V can provide several benefits, including:

  • Improved scalability: Hyper-V provides a more scalable platform for deploying virtual machines.
  • Enhanced security: Hyper-V provides a range of security features to help protect virtual machines and their data.
  • Increased flexibility: Hyper-V provides a flexible platform for deploying virtual machines, with support for a wide range of guest operating systems and hardware configurations.

Migration Steps

To migrate to Hyper-V, follow these steps:

  1. Plan your migration: Determine which virtual machines to migrate and when to perform the migration.
  2. Prepare your virtual machines: Ensure that your virtual machines are properly configured and backed up before migration.
  3. Migrate your virtual machines: Use the Hyper-V Manager to migrate your virtual machines to Hyper-V.

Download Hyper-V Free

Is Hyper-V Free?

Hyper-V is included with Windows Server and Windows 10, but it is not free to use for production environments. However, you can download a free trial version of Hyper-V from the Microsoft website.

How to Download Hyper-V

To download Hyper-V, follow these steps:

  1. Visit the Microsoft website: Go to the Microsoft website and navigate to the Hyper-V download page.
  2. Choose your version: Select the version of Hyper-V that you want to download.
  3. Download the software: Click the download button to download the Hyper-V software.

Hyper-V vs Open Source Options

What are Open Source Options?

Open source options, such as KVM and Xen, are alternative virtualization platforms that are free to use and distribute.

How Does Hyper-V Compare to Open Source Options?

Hyper-V provides several benefits over open source options, including:

  • Improved support: Hyper-V is supported by Microsoft, which provides a range of support options, including online documentation and technical support.
  • Enhanced security: Hyper-V provides a range of security features to help protect virtual machines and their data.
  • Increased scalability: Hyper-V provides a more scalable platform for deploying virtual machines.

Technical Specifications

System Requirements

Hyper-V requires a 64-bit processor with second-level address translation (SLAT) capabilities.

Component Requirement
Processor 64-bit processor with SLAT capabilities
Operating System Windows Server 2012 and later, or Windows 10 and later
Memory 2 GB or more

Frequently Asked Questions

What is Hyper-V?

Hyper-V is a virtualization technology developed by Microsoft that allows users to create and manage virtual machines on a single physical host.

Is Hyper-V free?

No, Hyper-V is not free to use for production environments. However, you can download a free trial version of Hyper-V from the Microsoft website.

What are the benefits of using Hyper-V?

Hyper-V provides several benefits, including improved resource utilization, increased flexibility, and enhanced security.

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OpenStack backup-ready setup and rollback c | Virtacontainer

What is OpenStack?

OpenStack is an open-source cloud computing platform that enables users to manage and orchestrate a large pool of computing resources, including servers, storage, and networking. It is designed to be highly scalable and flexible, allowing users to deploy and manage a wide range of applications and services.

Main Components

OpenStack consists of several key components, including Nova (compute), Swift (object storage), Cinder (block storage), Neutron (networking), and Keystone (identity). These components work together to provide a comprehensive cloud infrastructure that can be used to deploy and manage a wide range of applications and services.

Benefits of OpenStack

OpenStack offers a number of benefits, including increased scalability and flexibility, improved resource utilization, and reduced costs. It also provides a high degree of customizability, allowing users to tailor the platform to meet their specific needs and requirements.

Installation Guide

Step 1: Plan Your Deployment

Before you begin installing OpenStack, it’s essential to plan your deployment carefully. This includes determining the size and scope of your deployment, selecting the right hardware and software components, and ensuring that you have the necessary resources and expertise to support your deployment.

Step 2: Install the Base Operating System

Once you have planned your deployment, the next step is to install the base operating system on your servers. This can be a Linux distribution such as Ubuntu or CentOS.

Step 3: Install OpenStack

With the base operating system installed, you can now install OpenStack. This can be done using a package manager such as apt-get or yum, or by using a deployment tool such as OpenStack-Ansible.

Technical Specifications

Hardware Requirements

OpenStack can run on a wide range of hardware platforms, including x86 and ARM-based servers. The minimum hardware requirements for OpenStack include a 64-bit processor, 4 GB of RAM, and 5 GB of disk space.

Software Requirements

OpenStack requires a 64-bit operating system, such as Linux or Windows. It also requires a number of software components, including a database, messaging system, and web server.

Pros and Cons

Pros

OpenStack offers a number of advantages, including increased scalability and flexibility, improved resource utilization, and reduced costs. It also provides a high degree of customizability, allowing users to tailor the platform to meet their specific needs and requirements.

Cons

OpenStack can be complex and difficult to deploy and manage, especially for smaller organizations or those without extensive IT experience. It also requires a significant amount of resources and expertise to support and maintain.

Migration Guide with Restore Points and Recovery Planning

Step 1: Plan Your Migration

Before you begin migrating to OpenStack, it’s essential to plan your migration carefully. This includes determining the scope of your migration, selecting the right tools and resources, and ensuring that you have the necessary expertise and support.

Step 2: Create a Backup and Restore Plan

Once you have planned your migration, the next step is to create a backup and restore plan. This includes identifying the data and applications that need to be backed up, selecting the right backup tools and technologies, and ensuring that you have a clear plan in place for restoring your data and applications in the event of a failure or disaster.

Step 3: Implement Your Migration Plan

With your backup and restore plan in place, you can now implement your migration plan. This includes migrating your data and applications to OpenStack, configuring your network and security settings, and testing your deployment to ensure that it is working correctly.

Download OpenStack Free

OpenStack is available for download from the OpenStack website. It can be downloaded as a binary package or as source code, and can be installed on a wide range of hardware platforms.

OpenStack vs Open Source Options

Advantages of OpenStack

OpenStack offers a number of advantages over other open-source cloud platforms, including increased scalability and flexibility, improved resource utilization, and reduced costs. It also provides a high degree of customizability, allowing users to tailor the platform to meet their specific needs and requirements.

Disadvantages of OpenStack

OpenStack can be complex and difficult to deploy and manage, especially for smaller organizations or those without extensive IT experience. It also requires a significant amount of resources and expertise to support and maintain.

FAQ

What is OpenStack?

OpenStack is an open-source cloud computing platform that enables users to manage and orchestrate a large pool of computing resources, including servers, storage, and networking.

How do I install OpenStack?

OpenStack can be installed using a package manager such as apt-get or yum, or by using a deployment tool such as OpenStack-Ansible.

What are the hardware requirements for OpenStack?

The minimum hardware requirements for OpenStack include a 64-bit processor, 4 GB of RAM, and 5 GB of disk space.

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Xen Project backup-ready setup and rollback | Virtacontainer

What is Xen Project?

Xen Project is a free and open-source virtualization platform that allows users to run multiple virtual machines (VMs) on a single physical host. It is a type-1 hypervisor, also known as a bare-metal hypervisor, which means it runs directly on the host machine’s hardware without the need for a host operating system. This provides a high level of performance, security, and isolation between VMs.

Main Features of Xen Project

Xen Project provides a range of features that make it an attractive solution for virtualization and containerization. Some of the key features include:

  • Support for multiple VMs on a single host
  • High-performance and low overhead
  • Secure and isolated environments for each VM
  • Live migration and snapshots for easy backup and recovery
  • Support for a wide range of guest operating systems

Installation Guide

Step 1: Download and Install Xen Project

To install Xen Project, you will need to download the software from the official website. The installation process is relatively straightforward and can be completed in a few steps.

First, download the Xen Project installer from the official website. Once the download is complete, run the installer and follow the prompts to install the software.

Step 2: Configure the Xen Project Environment

After the installation is complete, you will need to configure the Xen Project environment. This includes setting up the network, storage, and other settings as needed.

Xen Project provides a range of tools and utilities to help with the configuration process. These include the Xen Project management console, which provides a graphical interface for managing VMs and the Xen Project environment.

Technical Specifications

System Requirements

Component Requirement
Processor 64-bit x86 processor
Memory 4 GB or more
Storage 100 GB or more
Operating System Linux, Windows, or other supported OS

Supported Guest Operating Systems

Xen Project supports a wide range of guest operating systems, including:

  • Linux (Ubuntu, CentOS, Fedora, etc.)
  • Windows (XP, 7, 8, 10, etc.)
  • BSD (FreeBSD, OpenBSD, etc.)
  • Other supported OS

Pros and Cons

Advantages of Xen Project

Xen Project provides a range of advantages, including:

  • High-performance and low overhead
  • Secure and isolated environments for each VM
  • Live migration and snapshots for easy backup and recovery
  • Support for a wide range of guest operating systems

Disadvantages of Xen Project

While Xen Project provides a range of advantages, there are also some disadvantages to consider:

  • Complex installation and configuration process
  • Requires a high level of technical expertise
  • Not suitable for all use cases (e.g. gaming, video editing)

FAQ

What is the best way to migrate to Xen Project?

The best way to migrate to Xen Project will depend on your specific use case and requirements. However, some general steps you can follow include:

  1. Assess your current environment and identify the VMs you want to migrate
  2. Plan your migration strategy and create a backup plan
  3. Install and configure Xen Project on your host machine
  4. Migrate your VMs to Xen Project using the live migration feature

How does Xen Project compare to open source options?

Xen Project is an open-source solution, but it is often compared to other open-source virtualization platforms such as KVM and VirtualBox. Some key differences between these solutions include:

  • Performance: Xen Project is generally considered to be higher-performance than KVM and VirtualBox
  • Security: Xen Project provides a high level of security and isolation between VMs
  • Features: Xen Project provides a range of features, including live migration and snapshots, that are not available in all open-source solutions

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Other programs

vSphere Hypervisor

vSphere Hypervisor (ESXi) — VMware’s bare-metal layer What it is ESXi, officially called vSphere Hypervisor, is VMware’s bare-metal hypervisor. You install it straight on the server, no Linux or Windows host underneath. For many datacenters it’s the base layer: stable, predictable, and designed to integrate with the rest of VMware’s stack (vCenter, vMotion, HA, DRS). Free to download, but the good stuff (central management, clustering, API writes) comes only with licenses.

oVirt

oVirt — upstream virtualization for Red Hat shops What it is oVirt is the community project behind Red Hat Virtualization (RHV). At the core it’s just KVM + libvirt, but with a full management layer wrapped around it. Think of it as “vCenter, but open source and Red Hat flavored.” It’s heavier than Proxmox, but it has been running in production datacenters for years where admins wanted VMware-like features without VMware licensing.

Xen Project

Xen Project — bare-metal hypervisor that refuses to die What it is Xen Project is a type-1 hypervisor that’s been in use for more than 20 years. It started as an academic experiment in Cambridge, later became the base for many VPS platforms, and even powered AWS EC2 for years. Today it’s still maintained under the Linux Foundation. Not as trendy as KVM, but still useful if you need a small, security-focused hypervisor or want to separate workloads at the hardware level.

Windows Sandbox

Windows Sandbox — disposable Windows environment for safe testing What it is Windows Sandbox is a feature built into modern Windows (Pro and Enterprise editions, from Windows 10 1903 onward). It provides a temporary, isolated environment that runs a clean Windows instance on demand. The main idea is simple: you launch Sandbox, test or run something risky, then close it — and everything inside is discarded. No need to spin up a full VM manually or reinstall the OS after running untrusted software

Virtuozzo

Virtuozzo — mix of containers and VMs with hosting DNA What it is Virtuozzo has its roots in OpenVZ, the old Linux container project. Over time it turned into a commercial platform used by hosting providers to sell VPS long before Docker became a buzzword. Today it combines two approaches: lightweight containers for density and KVM-based virtual machines when you need a full kernel. That mix is what made it popular in the service-provider world.

VirtualBox

VirtualBox — cross-platform workhorse for labs and odd jobs What it is (short) VirtualBox is a type-2 hypervisor maintained by Oracle. It runs on Windows, Linux, macOS, and Solaris, and it spins up guest systems with minimal ceremony. Not the fastest thing on earth, and that’s fine; it’s the “it works everywhere” option that sticks around in classrooms, dev laptops, and compatibility test rigs.

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CtrlRemote.com offers smart and universal remote control solutions for home and business. Control TVs, ACs, lights, and more from anywhere with ease.

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