Virtual machines (VMs) sound like something out of a science fiction novel, but they are very much part of our digital reality. Their existence has transformed how we manage computer resources, making our lives easier, more efficient, and environment-friendly. Because these machines have become integral in modern computing, Statista’s global virtualization software market forecast predicts between 120 and 163 billion U.S. dollars in revenue by 2027.
So, how exactly are virtual machines used? Let’s dive into their functions and use cases in detail.
What is a Virtual Machine?
Think of a virtual machine as a digital replica of your computer. It can run its own operating system and software, store data, and connect to the Internet, but it doesn’t have the physical parts (hardware) that make up a regular computer.
‘A Guide to Virtual Machines’ on MongoDB outlines that they’re also known as guest machines since they work independently but function as a process on the physical computer’s operating system (OS). Due to this nature, you can run multiple VMs inside your host computer without affecting one another.
Why Use Virtual Machines?
There are several compelling reasons why users and companies adopt VMs. Here they are below:
1. Resource Optimization
In the past, each physical server had a dedicated purpose, which was not the most efficient use of resources. VMs changed the game by allowing multiple virtual servers to run on a single physical machine.
They could be assigned to different tasks like web hosting, database management, and email services. It’s similar to having a toolbox filled with various specialized tools.
2. Software Development and Testing
Virtual machines offer an ideal environment for testing new programs. Developers can configure a VM simulate a particular operating system, hardware setup, or network environment.
For example, say you’re building an app that should run on both Windows and Linux. You can create separate VMs for each operating system to test your software thoroughly and ensure a smooth experience on both.
Or, perhaps you updated your computer and want to use a specific outdated or incompatible software. You can configure your virtual machine to mimic an older version of your operating system and install said software there.
3. Disaster Recovery
Imagine a catastrophic event that wipes out everything on your physical computer. Without proper backup measures, it could spell disaster for you! This is where virtual machines come to the rescue.
VMs can be easily replicated and stored offsite. In case your computer malfunctions, these VM backups can be quickly activated, minimizing downtime and data loss.
4. Security Through Isolation
As we’ve learned from the most prolific cybercrimes in history, one human error can cause a network-wide breach. Fortunately, VMs offer a layer of isolation that enhances data security, as stated in our post on ‘6 Ways to Use Technology in Business to Reach Your Goals’.
Since a VM works independently, with its own isolated environment, malware threats or security breaches won’t affect other virtual machines you have or your host computer.
This also provides you with an opportunity to refine your security measures. You can create controlled environments and simulate cyberattacks to pinpoint any vulnerabilities.
5. Green Computing
According to TechSpot’s report on sustainable computing, data centers globally consume 205 terawatt hours per year. That’s more than the annual electricity usage of several countries! To reduce your carbon footprint, consolidating servers into fewer host computers is the way to go.
Fewer physical machines mean less power consumption and reduced electronic waste, both of which contribute to a greener IT infrastructure.
Conclusion
Whether you’re a person seeking to experiment with different operating systems, test software, or enhance your cybersecurity knowledge, virtual machines provide an accessible and practical solution.
They empower you to create isolated digital environments where you can safely explore, learn, and work on diverse computing tasks without the need for multiple physical devices.
A virtual machine is just one of our ‘20 Tech Terms You May Have Heard, But Never Understood’. Feel free to browse our site for more tech trends.
