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The terms “virtual server” and “physical server” do not refer to a state of tangible or intangible existence but rather to the way the machines are structured.All digital data and systems have to exist and be hosted somewhere in the real world. A platform that runs on the cloud, your personal accounts, a company website you visit online, or an app on your phone can all be traced back to where they are hosted: a real machine.With that said, let’s look at two short standard definitions of both terms before we dive into the technology behind them.Physical server: A physical server is a hardware device that is used to run applications and services. It has its own dedicated resources, such as CPU, memory, storage, and networking. Physical servers are used for on-premises operations and by organizations that need high-performing, isolated, and specialized digital systems.Virtual server: A virtual server is a software-based replica of a physical server. It is built using a hypervisor which creates and manages virtual machines (VMs) existing on a top layer above the real physical hardware. Several VMs can be created on one physical server, sharing its resources. Virtual servers are used by cloud computing vendors to maximize their hardware resources, leveraged by developers as test environments, and power most of the online world.
What is a physical server?A physical server is any machine with chassis, CPU, GPU, RAM, storage, its power supply unit, network interface, OS, server application software, and other software. Physical servers are typically designed to run 24/7, and are not used for general computing but rather to run applications that serve other computers, such as web servers, hosting, or other server tasks.No matter what size that machine is, whether a small desktop computer or a large rack-mounted server, and no matter where it is located, it will always be a physical server. Technically these types of machines are also called bare metal servers. Bare metal servers can be operated privately by organizations at their own locations, or accessed through top cloud vendors.Key features
The most important difference between physical and virtual servers is that the former retain all the resources of the machine exclusively for themselves. This makes physical servers extremely secure and very powerful. Key features include of physical servers include:Higher performance: Bare metal servers can provide better performance than virtual servers because the resources of the server are not shared with other users.More isolation: Physical servers are more isolated than virtual servers, improving security and reliability.More control: Physical servers give users more control over the hardware and software and their operations.Dedicated resources: Physical servers have dedicated resources, such as CPU, memory, storage and networking. This means that these resources are not shared with other servers, which can provide better performance and isolation.Scalability: Physical servers can be scaled up or down by adding or removing hardware components. This can be useful for businesses that experience fluctuating workloads.Reliability: Physical servers are typically more reliable than virtual servers because they are not subject to the same virtualization overhead. However, they are considered to present single-point-of-failure risks.
Use casesIn the early 2000s, the large majority of servers in the world were physical servers. This means that digital systems were powered by “individual” machines, usually each company hosting their own to drive their IT systems.Today, the scale has shifted and VMs run the majority of global server workloads. However, physical servers still have a place in the modern IT infrastructure and they are used for a variety of demanding workloads.Popular use cases for physical servers include:High-performance computing (HPC): HPC workloads require high levels of performance and scalability. Physical servers can be used to create HPC clusters, which can be used to run complex scientific and engineering simulations.Machine learning (ML): Physical servers can be used to train and deploy ML models that require large amounts of data and computing power.Database hosting: Database workloads require high levels of performance, security, reliability, and scalability.Mission-critical applications: Mission-critical applications, such as ERP and CRM systems, require high levels of performance, reliability, and security. Physical servers are often used to host these systems.Bare metal cloud computing: All top cloud vendors offer bare metal cloud computing — a type of cloud computing service. These are used by customers who demand high levels of performance, control, and isolation.
Industries that use physical serversIndustries that put the use cases of physical servers to work include financial services, healthcare, government and defense, aerospace, logistics, public services and utilities, manufacturing, and media and entertainment. These sectors value the reliability, performance, security, isolation, and ownership that physical servers provide.What is a virtual server?A virtual server is a digital replica of a physical server, usually created using only a fraction of the resources of the original physical server in order to power many identical virtual servers on the same hardware. Virtualization is the key to cloud computing and how big tech can offer efficient resources at global scales while maximizing their hardware.Imagine you had a large rack mounted with all the state-of-the-art hardware and software needed to run a modern server. This machine has significant computing power, lots of storage, incredible speed, reliability, and security.
A customer comes along and wants to rent out your machine to host a site.But then two more customers come in and want to rent your machine to manage a database. So you transform that rack-mounted physical server into
What is a physical server?A physical server is any machine with chassis, CPU, GPU, RAM, storage, its power supply unit, network interface, OS, server application software, and other software. Physical servers are typically designed to run 24/7, and are not used for general computing but rather to run applications that serve other computers, such as web servers, hosting, or other server tasks.No matter what size that machine is, whether a small desktop computer or a large rack-mounted server, and no matter where it is located, it will always be a physical server. Technically these types of machines are also called bare metal servers. Bare metal servers can be operated privately by organizations at their own locations, or accessed through top cloud vendors.Key features
The most important difference between physical and virtual servers is that the former retain all the resources of the machine exclusively for themselves. This makes physical servers extremely secure and very powerful. Key features include of physical servers include:Higher performance: Bare metal servers can provide better performance than virtual servers because the resources of the server are not shared with other users.More isolation: Physical servers are more isolated than virtual servers, improving security and reliability.More control: Physical servers give users more control over the hardware and software and their operations.Dedicated resources: Physical servers have dedicated resources, such as CPU, memory, storage and networking. This means that these resources are not shared with other servers, which can provide better performance and isolation.Scalability: Physical servers can be scaled up or down by adding or removing hardware components. This can be useful for businesses that experience fluctuating workloads.Reliability: Physical servers are typically more reliable than virtual servers because they are not subject to the same virtualization overhead. However, they are considered to present single-point-of-failure risks.
Use casesIn the early 2000s, the large majority of servers in the world were physical servers. This means that digital systems were powered by “individual” machines, usually each company hosting their own to drive their IT systems.Today, the scale has shifted and VMs run the majority of global server workloads. However, physical servers still have a place in the modern IT infrastructure and they are used for a variety of demanding workloads.Popular use cases for physical servers include:High-performance computing (HPC): HPC workloads require high levels of performance and scalability. Physical servers can be used to create HPC clusters, which can be used to run complex scientific and engineering simulations.Machine learning (ML): Physical servers can be used to train and deploy ML models that require large amounts of data and computing power.Database hosting: Database workloads require high levels of performance, security, reliability, and scalability.Mission-critical applications: Mission-critical applications, such as ERP and CRM systems, require high levels of performance, reliability, and security. Physical servers are often used to host these systems.Bare metal cloud computing: All top cloud vendors offer bare metal cloud computing — a type of cloud computing service. These are used by customers who demand high levels of performance, control, and isolation.
Industries that use physical serversIndustries that put the use cases of physical servers to work include financial services, healthcare, government and defense, aerospace, logistics, public services and utilities, manufacturing, and media and entertainment. These sectors value the reliability, performance, security, isolation, and ownership that physical servers provide.What is a virtual server?A virtual server is a digital replica of a physical server, usually created using only a fraction of the resources of the original physical server in order to power many identical virtual servers on the same hardware. Virtualization is the key to cloud computing and how big tech can offer efficient resources at global scales while maximizing their hardware.Imagine you had a large rack mounted with all the state-of-the-art hardware and software needed to run a modern server. This machine has significant computing power, lots of storage, incredible speed, reliability, and security.
A customer comes along and wants to rent out your machine to host a site.But then two more customers come in and want to rent your machine to manage a database. So you transform that rack-mounted physical server into