What Is a Hypervisor?
A hypervisor is the virtualization layer responsible for creating, allocating, and managing the resources used by virtual machines.
The hypervisor abstracts physical hardware components, including processors, memory, storage, and networking, then presents those resources to guest operating systems as virtualized devices. This model enables multiple virtual machines to operate independently on the same physical server.
Hypervisors are commonly categorized into two architectural types. Type 1, or bare-metal hypervisors, run directly on physical hardware and are frequently deployed in enterprise data centers. Type 2 hypervisors operate on top of a host operating system and are often used for desktop virtualization, testing, development, or lab environments.
Beyond resource allocation, hypervisors manage workload isolation, virtual networking, scheduling, and hardware abstraction. Because the hypervisor and its management layer form the foundation of virtual infrastructure, backup and recovery solutions often integrate with hypervisor and management platform APIs to support backup, snapshot, and replication workflows.
Organizations operating multiple virtualization platforms frequently rely on data protection solutions that support diverse hypervisor technologies, helping maintain consistent backup and recovery processes across heterogeneous environments.
Why Hypervisors Matter
The hypervisor provides the operational foundation that allows virtual machines to share physical resources while remaining logically separated from one another.
Related Terms
- Virtual Machine
- VMware ESXi
- Microsoft Hyper-V
- Nutanix AHV
- Proxmox VE
- Virtual Machine Backup