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Q. What is a data center?
A. A data center is where the majority of an enterprise servers and storage are located, operated and managed.

Power continues to lead as a concern for data center operations. Data centers are designed to a specific power density - watts per square foot - with a typical cabinet of equipment occupying 14 sq. ft. of space.

Hardware assets should be used well after their depreciated financial life has ended â€” for as long as is technically possible.

Operating system virtualization is the use of software to allow a piece of hardware to run multiple operating system images at the same time.

Server virtualization is the masking of server resources (including the number and identity of individual physical servers, processors, and operating systems) from server users. The intention is to spare the user from having to understand and manage complicated details of server resources while increasing resource sharing and utilization and maintaining the capacity to expand later.

Network virtualization splits available bandwidth in a network into independent channels that can be assigned to specific servers or devices.

One of the primary reasons organisations do not perform frequent backups is that traditional storage management software runs over the network and can negatively impact network performance. As a result, many companies can only perform backups during off hours. However, this approach is also flawed because it exposes data to loss. A storage management solution that minimises network loading enables companies to perform backups as needed during the day.

With the Cisco UCS 82598KR-CI adapters, a maximum of two adapters are presented to the VMware ESX hypervisor running on the blade. This interface count does not support a fabric failover, and the service console must be migrated to the Cisco Nexus 1000V Series Switch along with all these other adapter types if any high-availability requirement exists. The actual migration of this interface during VMware ESX deployment on the blade is discussed in the specific adapter section later in this document, but for more detailed information about how to migrate a user's service console, see the Cisco Nexus 1000V Series documentation.

The Green IT approach can include several different phases in the lifecycle of a product â€“ the development, production, usage and disposal of IT. Development must grant consideration to the environment; the production must take place using environmentally friendly production methods; the IT solutions must be used in an environmentally friendly manner; and finally, IT waste must be disposed of in an environmentally correct manner. All of these phases are supported by research and innovation in Green IT.

Data storage systems are used in a variety of businesses for the purpose of storing and maintaining data which is critical to the operation of the businesses and their customers. It is very important that such data storage systems be highlyreliable to minimize or eliminate the chance of losing data if the system fails. The most secure and reliable systems employ total redundancy, in which every component of the system is replicated, such that, upon a failure of a component, anothercomponent takes over operation, so that the data storage system can remain fully functional. For example, two storage processors may be provided in a system such that if one fails, the other assumes the operation of the failed processor as well asmaintaining its own. However, total redundancy is expensive and can be an inefficient use of system resources.

A broad group of industry-leading partners supports the open, standards-based unified fabric architecture of the Cisco Nexus 5010 Switch. This switch also delivers more than 500 Gbps of switching capacity with 20 fixed wirespeed 10 Gigabit Ethernet ports that support Data Center Ethernet and FCoE. In addition, one expansion port supports 8-port 1/2/4 Gigabit Fibre Channel, 4-port 10 Gigabit Ethernet (Data Center Ethernet and FCoE) and 4-port 1/2/4 Gigabit Fibre Channel, and 6-port 10 Gigabit Ethernet (Data Center Ethernet and FCoE).