Docker vs. VMWare: How are they different?
In today’s technological world, there is a clash between two top technologies, namely VMware and Dockers. These technologies are complementary to each other, but with distinct features and qualities. Moreover, both VMware and Docker are useful for businesses either individually or in co-ordination to each other. VMware is the hardware virtualization and Docker is about containerization. While both are useful for business, they vary in terms of functionalities and features.
Though, both technologies are different, they can be used together for added benefits. For example, VMware relates to the hardware virtualization, which means it provides isolation of machine. On the other hand, Docker container provides OS level isolation. For the added benefits of both services, Docker container can be used insider VMware.
Let us have a look at these technologies to understand how they are different.
Docker vs. VMware: How are they different?
VMware is a leader in the field of virtualization technologies and their providers. It helps setup a virtual working environment for guest operating system, such as Windows. One of its leading suits is vSphere that comprises of several services that collectively work as a cloud computing virtualization environment.
vSphere uses ESXi, which is known as a hypervisor technology. It is hypervisor technology due to which virtualization of hardware has been made possible.
Image src = https://en.wikipedia.org/wiki/VMware_vSphere#/media/File:VMware_vSphere_in_the_Enterprise_diagram_v1.0.gif
What is hardware virtualization?
It is a technique that allows several types of operating systems to create a room with a single set of hardware platform. All operating systems are assigned to a set of resources, such as CPU, Memory, etc., and all these operating systems use their own set of resources.
The best thing to know about ESXi is it does not need any operating system to make it work. It can be installed directly on the hardware platform.
Although, hardware virtualization has provided a great option to run several operating systems on a single hardware platform, Docker Containers are now putting it back on the queue of the popular technologies that organizations use to produce ultra-portable systems. Let us have a quick look at Docker Containers.
With the help of Docker technology, developers are able to develop and deploy applications while testing them on different platforms using containers instead of setting up virtual environment. The container allows the developer the bundle an application along with all required assets like libraries. The bundle created in the container eases the application deployment in the required environment. One of the important things to know about containers is these are created on the top of an existing Operating System.
Image src https://en.wikipedia.org/wiki/Docker_(software)#/media/File:Docker-linux-interfaces.svg
Docker containers make the deployment faster, as they have very less requirements to run applications. Moreover, the containers are treated as separate application bundles putting the compatibility issues on a side. And, if required, like the OS or an application, you can add versioning to containers making them ready for reuse without any hardware upgrade.
After having a brief introduction to VMware Virtualization and Docker Containers, let us go through the differences between them:
- Both provides virtual environment, but VMware offers a completely isolated virtual environment due to the use of hypervisor technology while Docker containers are not fully isolated, as they are executed by the Docker Engine.
- VMware virtualization is all about hardware virtualization while Docker container technology is related to application virtualization.
- VMware virtualization allows creating different instances of operating systems on a single set of hardware while Docker does not create fully operational virtual operating system environment. It bundles application along with the necessary elements, libraries, etc. to develop the required deployment environment for an application.
- VMware is heavier than Docker containers.
- VMware is slower than Docker containers.
- VMware is more secure and isolated than Docker containers.
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