Amazon Machine Images use one of two types of virtualization: paravirtual (PV) or hardware virtual machine (HVM). The main differences between PV and HVM AMIs are the way in which they boot and whether they can take advantage of special hardware extensions (CPU, network, and storage) for better performance.

There are a number of virtual machine virtualization modes, or domain types, as shown in Table 7.1, “Domain Types”. When you create a virtual machine using the Virtual Machine wizard you must select which mode to use.

Virtual machines may run in one of two main modes, paravirtualized (PVM) or hardware virtualized machine (HVM). In paravirtualized mode, the kernel of the guest operating system is recompiled to be made aware of the virtual environment.

2016年4月25日 · The main differences between PV and HVM AMIs are the way in which they boot and whether they can take advantage of special hardware extensions (CPU, network, and storage) for better performance. HVM AMIs are presented with a fully virtualized set of hardware and boot by executing the master boot record of the root block device of your image.

2016年12月21日 · 亚马逊系统映像使用两种虚拟化类型之一：半虚拟化 (pv) 或硬件虚拟机 (hvm)。 某些当前一代实例类型仅支持硬件虚拟机 AMI，而某些上一代实例类型仅支持半虚拟化 AMI。

2025年1月3日 · In AWS, HVM stands for Hardware Virtual Machine, and it refers to a type of virtualization used by certain EC2 instances. HVM instances take advantage of...

2022年6月29日 · Types of Hypervisor – TYPE-1 Hypervisor: The hypervisor runs directly on the underlying host system. It is also known as a “Native Hypervisor” or “Bare metal hypervisor”. It does not require any base server operating system. It has direct access to hardware resources.

2017年3月2日 · All current generation instance types support HVM AMIs. The CC2, CR1, HI1, and HS1 previous generation instance types support HVM AMIs. The C3 and M3 current generation instance types support PV AMIs.

亚马逊在Xen上运行，它提供了半虚拟化（PV）或硬件辅助虚拟化（HVM）。 半虚拟化曾经是推荐的select，因为它提供了更好的性能（通过主机和来宾上修补的专用内核/驱动程序与虚拟化主机更紧密地集成）。

2014年3月3日 · Amazon just recently came out with t2 instances that use only HVM. With the t2 instance aws introduces burstable performance (use resources when in need using credits, otherwise don't run in full power) and cpu credits (obtain credits if not running in full power over 24h period of time) to ec2 instances which lowers the price dramatically.