A data center (sometimes spelled datacenter) is a centralized repository, either physical or virtual, for the storage, management, and dissemination of data and information organized around a particular body of knowledge or pertaining to a particular business
The National Climatic Data Center (NCDC), for example, is a public data center that maintains the world's largest archive of weather information. A private data center may exist within an organization's facilities or may be maintained as a specialized facility. According to Carrie Higbie, of Global Network Applications, every organization has a data center, although it might be referred to as a server room or even a computer closet.
In that sense, data center may be synonymous with network operations center (NOC), a restricted access area containing automated systems that constantly monitor server activity, Web traffic, and network performance.
For that reason, a data center preferably consists of a well-constructed, sturdy building that houses servers, storage devices, cables, and a connection to the Internet. In addition, the center also has a large amount of equipment associated with supplying power and cooling, and often automatic fire extinguishing systems.
An indicator of the security level is provided by the “tier” rating as defined by the American National Standards Institute (ANSI).
Power supply
The data center is connected to two separate grid sectors operated by the local utility company. If one sector were to fail, then the second one will ensure that power is still supplied.
In addition, the data center has 13 diesel generators, which are housed in a separate building. Together, they can produce a total of 29 megawatts, an output that is sufficient to cover the data center’s electricity demand in an emergency. The diesel motors are configured for continuous operations and are always in a preheated state so that they can be started up quickly in the event of an incident. It only takes an outage in just one of the external grid sectors to automatically actuate the generators.
Both the local utility company and the diesel generators deliver electricity with a voltage of 20 kilovolts (kV), which is then transformed in the data center to 220 or 380 volts.
Requirements for modern data centers[edit]
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IT operations are a crucial aspect of most organizational operations around the world. One of the main concerns is business continuity; companies rely on their information systems to run their operations. If a system becomes unavailable, company operations may be impaired or stopped completely. It is necessary to provide a reliable infrastructure for IT operations, in order to minimize any chance of disruption. Information security is also a concern, and for this reason a data center has to offer a secure environment which minimizes the chances of a security breach. A data center must therefore keep high standards for assuring the integrity and functionality of its hosted computer environment. This is accomplished through redundancy of mechanical cooling and power systems (including emergency backup power generators)serving the data center along with fiber optic cables.
The Telecommunications Industry Association's TIA-942 Telecommunications Infrastructure Standard for Data Centers, specifies the minimum requirements for telecommunications infrastructure of data centers and computer rooms including single tenant enterprise data centers and multi-tenant Internet hosting data centers. The topology proposed in this document is intended to be applicable to any size data center.[3]
Telcordia GR-3160, NEBS Requirements for Telecommunications Data Center Equipment and Spaces, provides guidelines for data center spaces within telecommunications networks, and environmental requirements for the equipment intended for installation in those spaces. These criteria were developed jointly by Telcordia and industry representatives. They may be applied to data center spaces housing data processing or Information Technology (IT) equipment. The equipment may be used to:data recovery--------------------------------------
The data recovery process may vary, depending on the circumstances of the data loss, the data recovery software used to create the backup, and the backup target media. For example, many desktop and laptop backup software platforms allow end users to restore lost files themselves, while restoration of a corrupted database from a tape backup is a more complicated process that requires IT intervention. Data recovery can also be provided as service. Such services are typically used to retrieve important files that were not backed up and accidentally deleted from a computer's file system but still remain on disk in fragments.
what is hot dr
A hot site is a commercial disaster recovery service that allows a business to continue computer and network operations in the event of a computer or equipment disaster. For example, if an enterprise's data center becomes inoperable, that enterprise can move all data processing operations to a hot site. A hot site has all the equipment needed for the enterprise to continue operation, including office space and furniture, telephone jacks and computer equipment.
A cold site is a similar type of disaster recovery service that provides office space, but the customer provides and installs all the equipment needed to continue operations. A cold site is less expensive, but it takes longer to get an enterprise in full operation after the disaster.
Typically, a business has an annual contract with a company that offers hot and cold site services with a monthly service charge. Some disaster recovery services offer backupservices so that all company data is available regardless of whether a hot site or cold site is used. If an enterprise must use a hot or cold site, there are usually daily fees and other incidental fees in addition to the basic service charge.
A colocation (colo) is a data center facility in which a business can rent space forservers and other computing hardware.
Typically, a colo provides the building, cooling, power, bandwidth and physical security while the customer provides servers and storage. Space in the facility is often leased by the rack, cabinet, cage or room. Many colos have extended their offerings to include managed services that support their customers' business initiatives
Summit Communications Ltd.(SCL)
VISIONTo connect every household in Bangladesh with world class multi-media services with the objective to help develop a Digital Bangladesh.
MISSION
MISSION
- To implement and operate telecommunication transmission network for the country’s ICT and Telecom sector.
- To innovate and implement modern up to date transmission technology with durable, reliable and affordable service quality.
- To explore and work toward future potentiality of different multimedia services on multi operator model.
Mission & Objectives... Hi-tec park
Bangladesh hi- tech park has been established with a view to achieve a set of specific mission and vision. The underlying mission and vision are-
- To establish a world class business environment for targeted high growth industrial sector and new business
- To develop indigenous technological capability for the development of the local industries
- To enter into foreign markets by exporting state of the art technology products
- Infrastructure to facilitate hassle-free industrial operation with necessary support
The basic characteristics are the same regardless of the size of the data because every company’s success invariably depends on smooth software operations – and those have to be safeguarded.
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