KVM (Kernel-based Virtual Machine) hypervisor: features and benefits
KVM (Kernel-based Virtual Machine) is a Linux kernel virtualization module that allows you to create virtual machines (VMs) based on Linux servers. It is one of the most popular tier 1 hypervisors due to its free cost, performance and reliability.
Features of KVM:
- Create and manage virtual machines: KVM lets you create, start, stop, delete, and manage virtual machines using simple Linux commands.
- Support for various guest operating systems: KVM can run a wide variety of guest operating systems, including Linux, Windows, macOS, FreeBSD, and Solaris.
- Hardware virtualization: KVM uses Intel VT and AMD SVM hardware virtualization, which provides high performance virtual machines.
- Hot Add and Remove Devices: KVM allows you to add and remove devices from virtual machines without having to power them down.
- Migration of virtual machines: KVM allows you to migrate virtual machines from one server to another without stopping their operation.
- Clustering support: KVM can be used to create clusters of virtual machines, which provides high availability and scalability.
Advantages of KVM:
- Free: KVM is open source software, which means it's free to use.
- Performance: KVM uses hardware virtualization, which provides high performance virtual machines.
- Reliability: KVM is a mature and reliable software that has been used for many years.
- Flexibility: KVM can be used to create a wide range of virtual machines with different configurations.
- Community: KVM has a large and active community of users and developers, which means that help is always available.
Disadvantages of KVM:
- Difficulty to set up: KVM can be more difficult to set up than some other hypervisors such as VMware ESXi.
- Limited support for commercial features: KVM lacks some features that are available in commercial hypervisors such as vMotion and VMware Workstation Player.
Overall, KVM is a great choice for users who need a free, high performance, and reliable hypervisor.
It is suitable for a wide range of virtualization tasks, from simple home servers to complex enterprise infrastructures.
If you're looking for a Tier 1 hypervisor, KVM is definitely worth considering.
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