Virtualization is a computing process that allows you to create versions of resources between the computer and the hardware. Thus creating various platforms. Learn more about this topic by reading the following article. advantages and disadvantages of virtualization
Virtual machines depend on the so-called hypervisor. These are part of the various devices that help to visualize the process that generates virtualization. They create separation between hardware resources and distribute them appropriately. It is a very important tool that is used in various areas of computing and computing.
Technological resources can be modified with virtualization techniques. From the modification of a hardware through the so-called VMM in English “Virtual Machine Monitor”. Which is a device that creates an abstraction between the hardware and the physical device. But let’s see in detail what we are referring to.
Concept and characteristics
The virtualization process consists of managing and distributing the most important resources that a computer contains. In other words, it modifies the memory in some way and its condition through the CPU. As well as the various peripheral devices and the various connections.
In this way, it distributes the resources among the various virtual machines called Hypervisor. With these procedures the so-called virtualization is achieved. Where several computers became virtual devices executing actions that also link the main computer. Virtualization has been heard for many years. It has been applied to various areas of technology and is essential in its application to large computers and individual components.
Virtualization establishes a process in which an external interface is generated and linked through various physical locations and resources. Currently, various forms of virtualization are observed in various areas that have made it possible to streamline various processes.
Virtual machines have the ability to simulate a platform independent hardware. These can even include an operating system or multiple servers. This software has the ability to operate as is as if it were original, and even manifests itself in its operations autonomously.
Virtualization can be expressed in various ways. One of the most used is the so-called Virtual box. It is a system that consists of managing actions that link the computer with the server. Also the relationship as the server with the software, manage the user section, establish various applications, and other computer-type applications.
Virtualization allows you to appreciate the creation of almost perfect machines that can be used in offices. Which today represents a market in the world of computing with a lot of boom and development. Many companies are dedicated to this area. Where they offer services and virtualization designs. Such as Windows Server 2008, XenServer, Hyper-V, and VMware ESX. They help to improve the servers.
The Pros and Cons of Virtualization
The forms of virtualization allow to optimize processes. Change the way you appreciate certain technological aspects. But like all technology it has some advantages and disadvantages. These are established according to the characteristics of the needs, help or impair the processes and information, let’s see
What are the advantages of Virtualization?
First, it gives the so-called higher server utilization rates. Loads are encapsulated more efficiently, transmitting faster to idle channels. The virtual resources in turn allow for the consolidation of additional acquisitions on the servers.
Another advantage is represented by the way of activating virtualization in Bios , allowing to speed up the checking and startup of installed operating systems. It also allows managing the consolidation of resources.
It directly establishes the storage and gives the opportunity to establish resources in the systems architecture. Data transmissions are simplified and more efficient. Also the entire network environment, including the desktop interface and business-related procedures.
Power consumption decreases and costs are reduced. The electricity required is less, it allows to activate operations with a minimum amount of energy consumption, especially electricity. Compared to normal costs for hardware server consumption, virtualization even allows saving up to 40% of consumption.
The hardware can be reused and modified eventually. Options can be given to modernize them, obtaining improvement of the software. On the other hand, it allows saving space since sometimes the expansion of the servers requires the investment and use of additional space. This will make any company generate a problem that sometimes chaotic processes.
Virtualization alleviates system saturation. It consolidates virtual programs that help keep certain programs operational without requiring so much space. On the other hand, virtualization is committed to increasing the services that can help in the event of disasters. advantages and disadvantages of virtualization
The capacity for increased deployment of new applications also increases and enables smooth operations. Likewise, the update processes are carried out in minutes and you do not have to wait weeks to renew them. They also allow new resources for ritualized servers.
Finally, it establishes a centralized and simplified administration. Something that servers take to process. The infrastructure and architecture of the system works more easily.
Migration is more prudent and services arrive without interruption from one server to another, so downtime is reduced. The important thing among its advantages is that the availability of shared use is always present.
Disadvantages of Virtualization
Among the disadvantages or cons that are generated during the implementation of virtualization are, in the first place, that the systems are totally dependent on a single computer. Although the form of administration is extremely easy, they are determined to a single generation core. The hypervisor limits the actions of the hardware. Only that there may be a possibility that compatibility can be lost at any time.
On the other hand, the resources used during hardware virtualization must be very broad and extensive. In case more resources are added such as virtual machines. These may decrease your operability, safety and reliability in a short period of time.
Virtualization and operating systems
When objectives are raised where the use of two programs is intended, it can be said that the same operations are being spoken in computer terms. Virtualization is a programming option that helps to maintain two or more operating systems in case we do not want to install other Software in a particular way.
If so, both operating systems behave the same as if they were installed on different computers, so that both programs work independently but harmonized. It requires a boot loader. This will allow an option to open on the screen that will ask which operating system you want to work with.
Some choose to install through virtualization two different programs such as Linux and Windows. Then the user will choose whether to work with the one that best suits him.
The interesting thing about virtualization is that it allows you to operate both programs independently when you want. But it has a disadvantage, none of the installed programs will work with the same performance as if it were working with a single operating system.
Platforms advantages and disadvantages of virtualization
The simulation structures are very varied, the platforms used by the virtual machines are carried out through “Host” type software. This represents a control program in which a simulation of the computer’s structure is created. The conversion form so to speak is called “Guest”. A complete operating system is then formed and runs as it is on an autonomous platform. Virtual machines simulate a physical machine.
An example of this are the flight simulators, consoles and prototypes used in car racing or simply to create situations in environments similar to reality. The created simulation must have a very large platform. Which should allow creating a similar environment and very similar to reality.
Complete advantages and disadvantages of virtualization
This type of virtualization is based on a virtual machine that simulates a specific program. The so-called “guest” then develops. It is an element that represents a virtual creation of the situation. The program takes sufficient resources from the operating system and runs them in isolation, performing operations on instances at the same time.
This virtualization has been developing for many years and it is from the year 2000 when various consoles and products are developed that materialize the concept of virtualization. Although at first some details of shape and very basic structures were noticeable. The designers allowed to create more detailed and real virtualizations of which various developments have been made in the 21st century.
Partial advantages and disadvantages of virtualization
Called in computer science “Address Space Virtualization”. It is a type of virtual machine which simulates multiple instances related to the hidden and isolated areas of a software. It allows sharing resources and receives processes from other systems. However, it is unable to receive the “guests” in all its structure. It is totally different from full virtualization.
Semi partial advantages and disadvantages of virtualization
As we have seen, virtualization allows the installation of operating systems on top of others. When the action is carried out taking into account the different layers of the kernel. We say that we are in the presence of a semi partial virtualization OS. It also consists of creating isolated partitions or different visual environments on a single active server.
With this type of virtualization, a higher and increased performance is achieved. When performing virtualization using the so-called hypervisor. Base layers are created, which are loaded directly from a server. The goal is to create resources towards the virtual machine.
However, the software must first be ritualized. Virtualization in the OS helps to greatly improve performance. It is applied through a program that contains the Windows program tool called Virtuozzo parallels. advantages and disadvantages of virtualization
Programs to virtualize
In the computer market you can get various programs, either free or paid. The recommendation is always to purchase paid programs. These allow to give guarantee of use and work, while the free programs come with limitations and the guarantee is not “guaranteed”. But let’s see what are those programs to virtualize.
To acquire paid programs, the first thing to do is to do a search for which are the most efficient software. We had already seen how Windows server 2008 performs a good activity within virtualization. There are also programs like VMware, which are very practical and offer very durable resources.
Other programs that can be obtained through the internet and simply by filling out a form to download it to the computer and turn it into a virtual machine is Parallels Virtuozzo Containers. That comes personalized. One of the most downloaded on the net and allows you to go directly to the operating system. Unlike others that do virtualization through hardware.
Among the free programs you should look for information about recent updates. However, there were some such as the virtual versions of Microsoft compatible for the latest versions of Windows. There is also Virtualbox, Open VZ, which are used to be ritualized on Mac and Linux. Although they can also be virtualized in any operating system.
Types of Virtualization
The world of virtualization comprises a series of processes that help establish your operations on any operating system. However, the types of virtualization determine on certain occasions the efficiency in which the installation and its subsequent operation can be carried out.
Virtualization can be done from a Windows operating system, whether it is XP, Vista or another version that is compatible with the program we use, even if we have Linux installed and we want to virtualize a version of Windows that way we virtualize another operating system such as Linux or vice versa .
Hardware Assisted advantages and disadvantages of virtualization
This type of procedure is carried out through extensions that are introduced into the architecture and configuration of the processor. This action allows speeding up virtualization tasks towards the software. Allowing to exercise the actions in the system. The distribution in the levels is done equally in the kernel of the Operating System.
Likewise, a ring 1 is introduced, which will be a kind of Hypervisor or virtual machine. So it will allow to isolate the upper layers of the software in the diverse future operations of virtualization.
Storage advantages and disadvantages of virtualization
It is a process in which logical storage is abstracted from physical storage, so-called “Storage Area Network or SANs are used. This is achieved by storing physical resources in the storage warehouse “storage pool” to create the so-called logical storage. Where the similar data from the software will remain.
Partition advantages and disadvantages of virtualization
This virtualization is related to the way in which disk partitions are managed. They are divided into single resource mostly in disk space or network bandwidth. It achieves better use of resources and efficiently lightens storage on the network.
Storage virtual machine
It is a kind of virtual package. It is used to improve the value in the combination of multiple storage disk. The package includes several models and also allows to complement the individual capacities with the reception of extended data. Acceleration and performance are present in this type of virtualization. Improving availability as well as speed.
This package features an abstraction layer and a data services layer. They are integrated with data from various sources that grant locations and acceptance in various formats. The most important that this type of virtualization presents is presented in the support it gives to applications and users.
Green IT and virtualization
For those who do not know the term Green It, it represents everything related to the so-called green technology. In other words, it refers to the systematic and efficient use of computer resources in order to reduce the negative impact that is generated on the environment. This seeks viability and efficient economy based on world news related to the issue of the environment.
Regarding its relation to virtualization. It is closely linked to energy consumption, it is directly involved with companies that have the availability to change servers. These consume a large amount of energy to be replaced by virtualization programs.
It is believed that the optimization of services would only imply some time and money in the short term. However, virtualization allows to create energy consumption much lower than normal. Likewise, a considerable decrease in the levels of Carbon Dioxide emissions is achieved.
Virtualization processes can be carried out by merging multiple machines and servers. Giving them a single processor, which achieves a fairly significant decrease in the consumption of kilowatts per hour. It is important because it represents a huge amount of annual savings.
Virtualized computers allow you to reduce expenses up to almost 40% per year. Representing a significant amount of money. When the servers are disconnected during some periods of inactivity, such as holidays, some for long weekends or company holidays, 25% of electricity consumption is saved with them.
In other words, most of the non-virtualized servers must remain turned on so that their programs do not crash. With the virtualization process, equipment and servers can be paid for without losing any important information or data between shutdown and startup.
In this way, some companies seek to collaborate and put their grain of sand with respect to caring for the environment and also serve to motivate other companies to carry out actions of this type that lead to a massification of virtualization.
Architecture and infrastructure
The virtual organization also called virtual infrastructure. It consists of a general mapping of how physical resources are combined taking into account the needs of the company or client. The virtual machine allows to establish a quantity of resources in the main computer, whereas the virtual infrastructure considers the physical resources in their entirety.
It allows locating at the level of the entire network and storage of precise data for its operation. Always associating them to the so-called unified pool of resources. The virtual architecture is composed of the following elements:
It is a shared use resource that allows virtualization of all computers, it is a kind of brain that administers and manages the processes on all computers.
Systems infrastructure services
They are distributed through resource management. Allowing them to optimize them and make virtual machines more dynamic.
They provide special operations that optimize each IT process, they are a kind of security forces that seek to protect actions and resources in the event of disasters.
In short, the means provided by the virtual infrastructure help to separate the software environment from its infrastructure from the hardware that composes it. The importance and versatility of virtualization is allowed to be appreciated. In this way, it integrates various programs and computers into operations.
Its activity is very dynamic. Likewise, it allows to assign shared applications in a more reliable and secure way according to the needs. Every organization is creating a series of computing mechanisms with virtualization.
Developers are reaching very high levels of automation. The availability of virtualization is close. It is not a complicated system and is part of the actions of innovative resources in the technologies of the future. It is very flexible and its basic components allow it to provide economy and performance or users.
Why use virtualization?
We know how virtualization works, today countless companies are developing systems based on this process. Placing multiple operations on a single physical server of course generates a huge advantage to seek the optimization of operations.
Many wonder why use virtualization in systems that work in a stable way? We have several answers to this question. Many project managers and large companies are choosing to include virtualization in their operations.
In this way, they consider that they obtain greater performance of resources and optimization of processes. Also because they allow us to keep up to date on the dynamic processes of information technology, but let’s also see why virtualization
- Reduction of operating costs
- Greater efficiency of the environment in information technologies and operational technologies.
- Workloads speed up and run faster.
- The applications of the programs work more efficiently.
- You can have a better capacity in the servers, without having to uninstall it.
- The complexity in the processes is eliminated and the saturation in the servers is reduced.
Virtual networks allow actions to be carried out in the same way as physical networks. However, some considerable advantages can be appreciated, such as.
Directly link workloads across various logical network service and device samples. We have as an example switches, routers, firewalls, logical ports, VPNs, load balancers etc.
It is a service that allows you to manage Information Technology organizations in various locations. The answers are more precise and faster. The various virtual desktops help distribute information more quickly to the branches that the company may have locally or internationally.
In the world of computing there is a compatibility called cloud. This technology implements resources similar to virtualization. However, the latter has developed processes in recent years in which it uses software to separate computing environments from physical infrastructure.
Contrary to the so-called cloud computing technology, which seeks to offer a service of shared computing resources according to the needs of the user. This objective is developed for internet users only. They are complementary solutions that can help establish and ally with virtualization processes on servers.
Evolution of virtualization
At first it was said that this process began in the 60s. The technology itself began its development and momentum from the year 2000, when a service was offered in which users could access simultaneous computers. The idea was to carry out various procedures and handle them through batch information.
The batch type of information processing was a computer and operational technology that was carried out in various commercial-type environments. Where the data flow was very large. The work routines that provided thousands of tasks will allow the development of different ways of grouping processes that could be carried out
Despite not developing rapidly and exponentially. Virtualization was not felt in the world of technology as a process that will help streamline and process information efficiently. Other processes gained space and the solutions offered by some companies allow multiple processes to be carried out with several connected users and in direct contact with a single team.
Among the advances that saw the light at that time was the timeshare system. It consisted of a form of operation in which it isolated users from operating systems. So the actions carried out in this way allowed the development of other operational forms, then the unified UNIX operating system was born.
This software solution [or some operational obstacles, which were generated by the constant and bulky flow of operations, however and due to its limitations to solve certain administrative problems that were created by the growth of the processes.
It made it possible to bring Linux to life. A known operating system that had a moderate impact on users. However, virtualization still failed to obtain the optimization results. It was considered a niche, hidden and theoretical technology.
By the 1990s most companies had physical servers that use computer technology managed by a single vendor, allowing applications to run through another vendor.
This was obviously going to have consequences if the application provider could have any complications. Hardware however was deemed insufficient as companies grew and operating systems increased. The consequence was that each server could only perform a specific task that came from the provider’s application.
Limitations on actions related to other applications were complicating the processes. So in the late 90s and early 2000s, operating systems began to be implemented that could divide the operations of the servers. They allow you to run applications that came from other types of versions on other operating systems.
Virtualization was born then. From that moment, developers began to observe a very wide field of action and various options were launched with speed and fluidity, allowing processes to receive updates immediately. By the mid-2000s, some companies reported reduction in operating costs and optimization of processes.
The widespread application of server virtualization . It reduced dependency on a single provider and transformed everything related to cloud computing. Currently, companies frequently request procedures for adapting or updating virtualization in all their administrative and managerial processes.