What is Bare-Metal Cloud?
Bare-metal cloud is a service model that provisions dedicated physical servers on demand via API, giving users direct access to hardware without a hypervisor.
Bare-metal cloud is a hosting model in which a provider offers dedicated physical servers that can be provisioned, managed, and decommissioned through an API or web interface, similar to virtual machines in a public cloud. Unlike virtualized environments, there is no hypervisor layer between the operating system and the hardware. The OS runs directly on the server, which eliminates the performance overhead and resource contention caused by virtualization.
When a user requests a server through the API, the provider automatically configures the hardware, installs the operating system, and makes the machine available within minutes. This process often relies on pre-provisioned hardware pools, network booting, and automated OS image deployment. The user gains full control over the kernel, drivers, and firmware settings, and can install custom hypervisors or container runtimes on top of the bare metal.
Bare-metal cloud sits between traditional colocation and virtualized public cloud. It offers the isolation and raw performance of dedicated hardware with the agility and self-service of cloud infrastructure. Use cases include high-performance computing, latency-sensitive applications, big data analytics, and workloads that require hardware-level security or compliance. Major providers include Packet (now Equinix Metal), IBM Cloud, and OVHcloud.
Key facts
- No hypervisor is used; the OS interfaces directly with physical hardware.
- Servers are provisioned on demand through an API, typically in under 10 minutes.
- Users have full root access and control over firmware, BIOS, and kernel settings.
- Performance is consistent because there is no resource contention from neighboring tenants.
- Billing is often metered by the hour or month, similar to virtual cloud instances.
How it works in practice
Related terms
References
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