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A virtual machine (VM) is an computer system that is emulated and runs on the physical host machine. It appears to the user as a genuine computer system and is able to run various operating systems, including Windows, Linux or macOS. VMs are well-known because they permit multiple environments to be hosted on a single server, which can result in significant savings for businesses.

Typically typically, a VM is a “guest” on a host computer which has hardware resources such as processors, memory and hard disk drives. This means that a business can fit several VMs on the same host machine, allowing flexibility to allow IT infrastructure to expand or shrink as necessary. This flexibility also helps reduce the time IT teams are able to spend on deploying and managing software updates, since they can do it on a server-by-server basis rather than having to manage each individual physical machine.

There are two types of VM hypervisors Type 1 and Type 2. Type 1 hypervisors offer better performance because they run directly on the host computer, without the requirement of a full-blown operating system. Type 2 hypervisors pass each VM request through the host operating system, which can slow down processing speed and add additional cost.

In addition to scalability, virtual machines can help improve IT security and disaster recovery. Virtual machines are not tied to the underlying physical hardware. This makes it much easier to restore the VM in the event of an outage or natural disaster. This can help prevent data loss and downtime which can directly impact the bottom line of your business.