Bare-metal Server definition & meaning
A bare-metal server is a physical computer server used by one tenant only. Unlike the cloud model, bare-metal servers belong to one user, also known as single-tenant physical servers. Bare metal servers allow users to optimize the server based on their needs. Bare metal servers are designed to run dedicated services; thus, stability, durability, and reliability are very important. Since the bare-metal server users don’t have to share their resources with neighbors, it also offers a very predictable performance.
Bare metal servers don’t need virtual machines, which allows users to use the hypervisor directly, granting more control over the physical hardware. In traditional bare metal servers, the operating system is installed directly on the server, and applications run natively in the operating system. Fewer software layers between the user and the physical hardware provide better performance. However, a user can create a virtual machine on top of a bare-metal server if necessary.
What is Bare-metal Hypervisor?
A hypervisor allows users to create virtual machines within the bare metal server. Hypervisors are installed on the bare-metal server and come with a management suite designed to create and manage virtual machines on the server. Hypervisors aim to virtualize the workload into different virtual machines, which provides flexibility and reliability. Various hypervisor solutions in the market offer similar features, allowing users to choose according to the vendor, infrastructure, staff certification, and price.
What is Bare-metal as a Service?
BMaaS or Bare-Metal as-a-service is a service model. The vendor provides the dedicated physical infrastructure to the customer’s data center with a similar on-demand cloud service scalability. In BMaaS solutions, the vendor handles the procurement of hardware, software, deployment, support, optimization, and lifecycle management services. BMaaS is a full-stack, hosted, on-demand solution, unlike outsourced colocation data centers.
What are Bare-metal cloud servers?
Bare-metal cloud is a branch of the Infrastructure-as-a-Service model that includes dedicated server hardware, data center networking, storage, and the facility that houses the infrastructure. BMaaS solutions are mostly billed monthly and ideal for organizations that need flexibility, predictability, scalability, and full system control. Unlike other IaaS services, BMaaS doesn’t include a hypervisor and a management portal. The customer is completely responsible for the hypervisor or the operating system installed directly on the server.
Also, unlike public-cloud solutions, using virtual machines, bare-metal cloud relies on physical machines to provide maximum performance without noisy neighbors interrupting your dedicated resources. Bare-metal cloud servers are ideal for building applications, hosting NoSQL and relational database management systems, creating custom virtual environments, big data, AI and machine learning, game servers, and render farms.
What is the difference between Bare-metal and Virtual Machine?
The main difference between bare metal servers and virtual machines is that bare metal servers dedicate all resources to a single tenant. On the other hand, virtual machines share the physical server’s resources among its tenants. To create virtual machines, users need to install a hypervisor on the bare-metal server; then they will be able to create virtual machines.
However, bare-metal users can install an operating system directly on the physical server to get maximum performance. Bare metal servers dedicate all resources to a single tenant; thus, they are more secure, provide better and more predictable performance. However, it also requires technical expertise to manage a bare metal server, and since they are billed monthly, it is not as flexible as a virtual machine can be.
What is the difference between dedicated servers and Bare-metal servers?
Dedicated servers and bare metal servers have a lot in common, and both refer to single-tenant physical servers. The difference between dedicated servers and bare metal mostly depends on the provider. The dedicated server solutions mostly come with long provisioning times and low-end hardware. The bare metal server concept is created as a response to these negative associations. Bare metal servers can be provisioned very quickly, come with various hardware options, including the best available devices with graphic processing units.
What are the advantages and disadvantages of Bare-metal servers?
The most important advantages of bare metal servers are dedicated hardware and root access. Root access means the user has full control of the entire server and can optimize it to meet the needs. The user can also directly install an operating system to the bare metal server or create various virtual machines by using a hypervisor.
Additionally, the user doesn’t share the resources with other tenants, which allows the user to avoid the noisy neighbor effect. On the other hand, bare-metal servers cost more than most other hosting solutions. It also requires knowledge of server administration, which may also mean hiring multiple IT professionals to handle the management of the bare metal servers.