Virtualization is a term that can be applied to different technologies. For example, networks, storage systems and databases can be virtualized. Virtualization has been in IT for a long time, but it has now emerged with its x86-based platforms advantage. The main advantage of virtualization is that a single system has the ability to be used with shared hardware resources, on more than one operating system, also called partitioning.
Now virtualization can be applied to a wide range of system layers, including hardware level, high level language and operating system level virtualization. Hardware level virtualization was started in IBM mainframes in 1970s. After that only recent Unix/RISC systems had hardware-level capabilities.
For systems such as Unix/RISC, two main techniques are used for software-based partitioning which are hosted or hypervisor architectures. Hypervisor architecture is used most widely, as it is efficient and has direct access to resources whereas hosted architecture supports a wide range of hardware configuration and gives partition on the standard operating system. Hypervisor architecture has increased performance, scalability and adaptability than hosted architectures.
- 1. Continuation of operations in case of disaster and disaster recovery
Server virtualization provides disaster recovery, which relates to low cost and gives more time to recover.
VMware Inc. provides largest number of products along with ESX Server. Microsoft Virtual Server is also commonly used. Xen hypervisor is open-source software which works on multiple environments therefore is very effective.
Virtualization provides large number of advantages, which includes reduction in power requirement, and therefore the numbers of devices are reduced. For disaster management, it is necessary to check various issues like the backup of critical data.
- 2. Availability and performance
Virtualization is an easiest way of reducing the expenses while increasing performance. This is true for large organizations as well as small ones. VMware allows you to do the following:
- Reduce overall cost and expenses.
- Utilize your hardware to get more production from less number of servers.
- Use large number of applications and OS on a single machine.
- Increase efficiency and install new applications more easily.
- 3. Reduced costs and higher environmental efficiencies
These days cost management is the most important issue in an organization. Most organizations require methods that help reduce cost while others are looking to supply information not caring for costs. This brings to two major trends that have evolved these recent years, such as virtualization and cloud computing. Many organizations look for virtualization to increase productivity and reduce cost.
On the other hand, cloud computing involves using third-party services. This helps in reduced cost, personnel, hardware, storage and many different resources. It also leads to increased flexibility. However, these issues are not without risks for both virtualization as well as cloud computing. Both of them require risking security, architecture, privacy and application.
- 4. Relieving power/space constraints
Recent statistics show that many large multinational firms have virtualized a large part of their data center. It is obvious that maximizing the benefits of virtualization requires loyalty as well as commitments of time and efforts. The server rooms and data centers without virtualization efforts are inefficient for any company because they are not utilized to their full potential. After making the data centers virtualized it will automatically save time and money. It will also cut the cost of management and operational expenses and will reduce the workload of servers.
Improved Cost accountability
Multinational firms these days are constantly looking for ways to supply business and operational changes to enhance the productivity, flexibility, and agility at low costs. IT individuals are looking for the ways to lower the cost and increase security of their PC’s therefore; they are considering Desktop Virtualization Technology.
Companies today look for increased productivity, adaptability, and better service to the customers with low cost. Deploying Desktop Virtualization technology as a managed service lets you respond more quickly and offer protected admittance without sacrificing security or performance. In a virtual desktop infrastructure, the virtual desktops are accessed through thin clients. These have less complicated functions. For this reason, they are easier to understand, are less expensive and more secure. However, the real advantage of Virtual Desktop is that each and every desktop becomes an endpoint in the cloud.
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