Server Consolidation And Virtualization Pdf

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Platform virtualization software , specifically emulators and hypervisors , are software packages that emulate the whole physical computer machine, often providing multiple virtual machines on one physical platform.

Virtualization technology is important for servers that compose cloud data centers.

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A Study on UNIX Server Consolidation by Virtualization

Skip to main content. Homepage Header Search box Search. Description Until fairly recently, data center operators typically installed at least one physical server per application. Consolidating these servers will eliminate systems and reduce energy, hardware, and support costs. Server consolidation reduces total number of servers by putting more applications on fewer machines. You can consolidate servers by: Combining applications onto a single server and a single operating system instance.

Two or three lightly utilized file servers, for example, can be consolidated onto one machine. Clustering servers. Traditionally, data centers required one backup server for each primary working server. That no longer is necessary. Applications in the cluster are continuously monitored, and if an application fails on one server, it's activated instantly on another server within the cluster. Advanced clustering software can even include the capability to "direct traffic," or move applications among servers and storage devices to fine-tune performance and maximize workload.

This is yet another way to reduce hardware, space, and power consumption. Downsizing the application portfolio. Many large organizations run a number of very similar applications, some of which are underutilized. Fewer servers are needed when redundant applications are eliminated. Virtualize servers. By creating several virtual servers on one device, you can dramatically reduce the required number of physical servers.

In addition to saving space and money, virtualization provides a previously unavailable level of flexibility. For more information on virtualization, see the Server Virtualization section of this document and the Server Virtualization section of this website. One watt-hour of energy savings at the server level results in roughly 1. In addition to cost savings from lower power consumption, less cooling and less maintenance, consolidation helps organizations standardize their systems, allowing for shared infrastructures with more flexibility.

Standardization through consolidation means fewer spare parts are needed to keep the data center running. If you are only using two vendors instead of 10, it is much easier to get the replacement cables, power supplies, fans, and other parts you will occasionally need. Labor costs for consolidation include: Conducting a thorough inventory and consulting all potentially interested parties, Migrating applications, Removing old servers and deploying new servers if necessary , and End-of-life disposal costs for systems that are not repurposed.

Considerations 35 Take inventory. It is easy to lose track of servers as time goes by, as mergers and acquisitions take place, as people procure servers without going through central IT, or as servers are retired or repurposed. The first step toward consolidation is identifying all servers in the organization. Take an inventory of computing resources and their associated application workloads.

Examine current usage. What applications are your servers running? When does utilization peak on each server? To get the most out of your consolidation projects, find patterns of low server utilization and unneeded equipment and software. Watch out for "hot spots". When you consolidate servers into a smaller footprint with blade servers, for example , you are probably creating "hot spots" in your data center.

Work with HVAC experts to ensure an adequate and efficient cooling configuration. Reduce downtime. There is always some risk of downtime when migrating applications and files from an existing server to a new system. Proper preparation can substantially mitigate this risk.

Consolidation of Lightly Utilized Servers

Provided by: National University of Kaohsiung. The physical server transition to virtualized infrastructure server has encountered crucial problems such as server consolidation, virtualization performance, virtual machine density, Total Cost of Ownership TCO , and Return On Investments ROI. Find By Topic.

In this paper, problems that additional hardwares should be introduced due to the introduction of new servers are reduced by reducing the space on the top surface of the computer data center after many old physical UNIX servers are loaded on one new virtualization consolidation server. In addition, some effects for reducing the computer maintenance cost and the power consumption of the computer data center could be generated. With such virtualization of UNIX server consolidation, it is expected that the maintenance cost of the computer center will be reduced in the future as well as currently and IT will be changed into green-it. The method for establishing a virtualization of server consolidation which is applied in this paper can be applied in the same way that other group of servers are consolidation. Keywords: virtualization, UNIX, server consolidation 1 Introduction The existing UNIX systems were operated while consisting of the individual hardware for each system in order to minimize the interruption with each other for each service. However, lots of additional IT resources are needed according to the changes in the computer system interfaces which become various gradually.

On the classification and quantification of server consolidation overheads

Skip to main content. Homepage Header Search box Search. Description Until fairly recently, data center operators typically installed at least one physical server per application. Consolidating these servers will eliminate systems and reduce energy, hardware, and support costs.

Empirical Analysis of Server Consolidation and Desktop Virtualization in Cloud Computing

How many servers for the underlying physical infrastructure are saved via server consolidation in virtualized data centers is of great interest to the administrators and designers of the data centers. Various workload consolidations differ in saving physical servers for the infrastructure. The impacts caused by virtualization to these concurrent services are fluctuating considerably which may have a great effect on server consolidation.

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Comparison of platform virtualization software