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KVM vs. VMware

09

Oct, 20

92

Most of the businesses choose to implement hypervisors because of the ability to share resources. There is a great variety of hypervisors available on the internet.

However only two of them are the famous ones in which organizations chose to share their resources. These two hypervisors are VMware and Kernel-based Virtual Machine (KVM).

We have done the research and made a comparison between VMware and KVM hypervisors.

We made the comparison taking into account the following key points that will help in choosing the right hypervisor for you:

  • Performance
  • Integration
  • Cost
  • Complexity

Performance

Hypervisors are mostly divided into two broad categories.

Type 1: 

The bare-metal hypervisor is the type that runs directly on the physical hardware. The OS of all the guests runs on top of the hypervisor.

Type 2:

They are also known as hosted hypervisors; they run with OS that runs on physical hardware. The guest OS runs on top of the hypervisor.

KVM is extremely difficult to classify because it has characteristics of both types. Linux user can start their KVM from the graphical user interface. It is faster and more user friendly.

While EXI is purely a type 1 hypervisor installed on OS, this type is slower than type 2 and a bit difficult to handle.

performance

Integration

Hypervisors use different modes and methods to communicate with physical hardware.

KVM uses an agent to communicate, which is installed on the hardware of the system. This hypervisor has a Linux based interface that is also used by red Hat and other distributors.

A VMware management plan is used to communicate with the hardware. EXI has an added advantage to access other products by using a management plane.  It also uses a VMware control stack to increase hardware requirements.

Cost

KVM is the clear winner when it's about the cost of these hypervisors. You don't have to make any additional expenses to install this hypervisor in order to integrate your systems. You can have access to an open-source OS.

On the other hand, you are charged a license fee when you want to install VMware. VMware is the first company to launch enterprise-class virtualization software. Being the innovator in the industry, they are the first to introduce this concept and a business end-user hypervisor.

Complexity

You don't need to translate the binary codes to accommodate the guests through virtualization. The system takes advantage of the extension of the processor. The first release of KVM was such a lightweight virtualization driver with almost around 10,000 lines of code (LOC).

complexity

You would be enthralled to know that VMware uses over 6 million LOC. This fact is a bit difficult to verify because the codes are not available publically. The original codes have not been rewritten since the hypervisor's inception, which makes it one of the most complex codebase when you compare it to KVM.

Summary

The most popular choice for users is KVM. This hypervisor is famous because of the low cost operating features. This is an open-source solution for the people who have just started their business and do not want to invest more in the hypervisor.

Once you have crossed the threshold for being a new or middle-level organization, you need advanced practices to prove your identity. Big organizations have to use trusted services to protect their data and reputation. The bigger companies always prefer VMware as it is a trusted yet expensive solution for resource sharing.

You can get your very own VMware powered VPS services from us by clicking here.

 

author img

Nisal N

I’m a Computer Engineering student and I always had a very strong passion for computers and networking. It always fascinated me how this technology functions and now I enjoy learning new things and also sharing my knowledge with fellow curiosity seekers out there.

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