Server virtualization is a method of creating a virtual server environment by partitioning a physical server.
The ability of each Division functions as a personal server to run different operating systems and application software for server virtualization.
Server virtualization and the benefits of server virtualization
This is extremely advantageous for financial institutions, corporations, large enterprises when they get advanced functionality without the need to invest more on the server. Server virtualization also support the consolidation of different servers are different departments in a company to use; This helps optimize resources and reduce total cost of ownership. However, server virtualization is also experiencing these problems and challenges related to the hosting environment of space.
One of the main disadvantages of server virtualization is the regulation on data storage in the physical environment does not work for the virtual server. This is because virtualization did not alter the storage infrastructure below the line with the virtual server is created. In addition, the virtual server is also not designed directly but should be built by partitioning a physical server available, this led to you can not require too high about the configuration data of a virtual server. With regard to the Division of the virtual server, the time frame is also shorter, along with increasing demand for speed, consistency, and agility of their servers, require the supplier or producer to make virtualization more quickly. To resolve this problem requires the implementation of new strategies and tools.
The method to solve storage problems in virtual servers
Method of fast hosting by Snapshot
Fast hosting by Snapshot refers to the separate State or the image of a system at a certain time. Snapshot helps to store all configuration, the data link to the virtual server at a particular time the file. A copy can record snapshots occupies less space. When changes are made, the new data is stored as the special block. The operations such as "Create" and "Delete" can be done on a quick record shot.
The virtual server can exploit the features of space-saving snapshots to store and recover data from them as needed, then the snapshots can be deleted.
Golden Images is a copy of all the data in a disk can be installed to configure a wide range of computer hardware. Administrators generally prefer to create the golden images to simplify installation on many platforms. In addition to ensuring a suitable environment for the calculation by reducing the scope of errors and loss of information when cloning.
When installing in a virtual server, the Golden Images tend to eliminate the need to change the configuration of repetitive, save time to create favorable conditions for the deployment of the virtual environment.
Images and Golden Images is a prerequisite for server virtualization for their tendency to simplify the new settings for the server. The simplicity in the use of snapshots and Snapshot Golden Images to help enterprises easily using the virtualization servers that do not need the skilled technician.
Thin Provisioning solutions
The concept of Golden Images of the same distribution rules per server to ensure consistency. This can be detrimental because it leads to a situation where the server can not use all the storage space allocated to it. Therefore to allocate storage to a more cautious way, a method called Thin Provisioning. This method refers to the allocation of storage for many people a flexible way, by checking the minimum space needed to know for each person at a certain time.
Thin Provisioning does not impose limits on a number of resources that each server is affected, but the archives are not distributed until specific servers actually require it. This is a great advantage because this process can be automated to ensure consistency and at the same time can reduce the waste of the source archive.
The disadvantage of traditional solutions
Reduce hardware investment costs: to meet the requirements of non-stop about the deployment, developing new applications and services, organizations need to continue to increase the number of servers. However, as more and more servers, these problems more difficult than:
Increased costs: buying more new servers will include the cost of purchasing the server and the other cost categories: power, cooling, space set on the server, ...
Low investment efficiency: with each, a dedicated server for an x86 application (low load) will yield the CPU activity just about 5-15%.
Lose the ability to manage: difficult to manage than when more and more servers and applications in a complex environment with many types of operating system, the hardware, the different server types.
Reduced job performance: IT staff will focus more time for the server configuration, deployment, monitoring, and maintenance. So no longer focusing much on the activities, the project helped raise the level of information infrastructure.
The benefits of Virtualization Solutions
Virtualization solutions to solve the problems of costs and productivity of operations by reducing server hardware and operating costs up to 50%, the optimal use of resources through virtualization. At the same time also helps deploy the servers quickly, easily and automatically manage the resources in the optimal server such as:
High availability of Virtualization Solutions
- Simplify infrastructure management by management focus.
- Automate the management of server resources to help the IT staff no longer spend too much time on the management server that will focus on the applications and services beneficial to users and organizations.
- Reduced to 50% of the cost of the new equipment such as servers, source, cooling system ... by increasing the performance of the current server.
IT is an increasingly important contribution to activities of enterprises and organizations. The active system stops IT though with any cause whatsoever: maintenance, backup, device error, natural disasters will influence to enterprises and organizations. Virtualization solutions will help protect the data in an effective manner, can retrieve lost data fast and easy; to provide fault tolerance, ensure these applications and services continues to operate when in trouble; at the same time allows the system restore IT after the disaster the efficiency with lower costs.