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Kelser

By: Kelser on November 18th, 2015

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The 7 Types of Virtualization

Modern Data Center | Workforce Enablement | Networking

In tech and non-tech business realms alike, virtualization has become a buzzword of sorts. But what does this current tech fad actually signify, and how does it affect things like network security?

What is Virtualization, Really?

Virtualization is a surprisingly simple concept…at least in theory. The simple explanation is that you create a virtual version of something that’s generally used for some type of execution. For example, if you were to partition a basic hard drive to create two hard drives, then they would be two ‘virtualized hard drives,’ as the hardware is technically a single hard drive that was digitally separated into two.

There are 7 primary types of virtualization, and each one differs according to the element it is used on. Each type can also have a different effect on network security.

1. OS Virtualization—aka Virtual Machines

Virtualizing an operating system environment is the most common form of virtualization. It involves putting a second instance or multiple instances of an operating system, like Windows, on a single machine. This empowers businesses to reduce the amount of physical hardware required to run their software by cutting down the number of actual machines. It saves companies cash on energy, cabling, hardware, rack space, and more, while still allowing them to run the same quantity of applications.

2. Application-Server Virtualization

Application-server virtualization is another large presence in the virtualization space, and has been around since the inception of the concept. It is often referred to as ‘advanced load balancing,’ as it spreads applications across servers, and servers across applications. This enables IT departments to balance the workload of specific software in an agile way that doesn’t overload a specific server or underload a specific application in the event of a large project or change. In addition to load balancing it also allows for easier management of servers and applications, since you can manage them as a single instance. Additionally, it gives way to greater network security, as only one server is visible to the public while the rest are hidden behind a reverse proxy network security appliance.

Are you in higher education? Check out Why You Should Care About VDI in Higher Education.

3. Application Virtualization

Application virtualization is often confused with application-server virtualization. What it means is that applications operate on computers as if they reside naturally on the hard drive, but instead are running on a server. The ability to use RAM and CPU to run the programs while storing them centrally on a server, like through Microsoft Terminal Services and cloud-based software, improves how software security updates are pushed, and how software is rolled out.

4. Administrative Virtualization

Administrative virtualization is one of the least-known forms of virtualization, likely due to the fact that it’s primarily used in data centers. The concept of administration, or ‘management,’ virtualization means segmented admin roles through group and user policies. For example, certain groups may have access to read specific servers, infrastructure, application files, and rules, but not to change them.

5. Network Virtualization

Network virtualization involves virtually managing IPs, and is accomplished through tools like routing tables, NICs, switches, and VLAN tags.

6. Hardware Virtualization

Hardware virtualization is one of the rarer forms of virtualization, and when simply explained it is similar to OS virtualization (it is, in fact, often required for OS virtualization). Except, instead of putting multiple software instances on a single machine, chunks of a machine are partitioned off to perform specific tasks.

7. Storage Virtualization

Storage virtualization is an array of servers that are managed by a virtual storage system. The servers aren’t aware of exactly where their data is, and instead function more like worker bees in a hive.

Which Type of Virtualization Should My Company Use?

As ‘virtualization’ has recently become a bit of a tech buzzword, companies are hopping on the virtualization bandwagon. We often hear questions from companies asking how to virtualize, or if they even should in the first place.

The decision to virtualize should stem from a needs-based discussion and we’d love to have that conversation with you. Contact us to schedule a convenient time to talk about your possible virtualization needs, and be ready to answer questions such as:

  • What are your current network security procedures?
  • What are gaps in your security protocol that you’d like fixed?
  • What are your IT pain points, and are they primarily hardware- or software-based?’

Through a series of questions and analysis, we can point you in the direction of the type(s) of virtualization that can help your business grow.

About Kelser

By actively listening to the client, Kelser has consistently met the needs of its client base for over 30 years. Through attentive observation of the changing industry, Kelser is able to react quickly to provide the best service and solutions available. Thanks to the dedication of our professional staff, this agility has advanced us as leaders in our industry.