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Featured Solution: Cisco Data Center Design & ImplementationQ. What is a data center? A. A data center is a computer facility designed for continuous use by several users, and well equipped with hardware, software, peripherals, power conditioning and backup, communication equipment, security systems, etc. Approximately half of the power consumed by a data center is required for cooling. As heat load increases, more floor space must be reserved for cooling equipment. Without high ceilings (20 feet or more), the hot exhaust air of servers is likely to become in-take air for servers mounted in the upper portion of a cabinet. Gradually raise the temperature at the server inlet point to run up to 24 degrees Celsius (75 degrees Fahrenheit), but use sensors to monitor hot spots and supplementary cooling, if required. In-house data centers can be a business weak link if proper attention isn’t paid to power use, cooling capacity, disaster recovery preparedness, running IT to support compliance initiatives, and staffing flexibility to support utility computing initiatives. The idea is that virtualization disguises the true complexity of the network by separating it into manageable parts, much like your partitioned hard drive makes it easier to manage your files. In addition to using virtualization technology to partition one machine into several virtual machines, you can also use virtualization solutions to combine multiple physical resources into a single virtual resource. A good example of this is storage virtualization, where multiple network storage resources are pooled into what appears as a single storage device for easier and more efficient management of these resources. A storage management solution should address the protection of recoverable as well as unrecoverable information. The need to protect unrecoverable data is obvious — unless this data is protected, it must be manually recreated if it is lost. As for recoverable data, although it may be recoverable through reinstallation, the process can be extremely time-consuming and costly. To reinstall an updated application, users must install the application plus all the updates. In addition, all preferences and options need to be reset to their exact state prior to the loss. 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. A green data center is a repository for the storage, management, and dissemination of data in which the mechanical, lighting, electrical and computer systems are designed for maximum energy efficiency and minimum environmental impact. High availability data systems optimize the reliability of data storage systems by providing redundancy only of critical components to eliminate single points of failure. A single point of failure occurs when the failure of a single component of a system causes the entire system to cease operating, resulting in the potential loss of data. Therefore, one goal in designing a high availability data storage system is to provide a satisfactory level of reliability while keeping the cost of the system in check. The Cisco Nexus 1000V allows policy to move with a virtual machine during live migration ensuring persistent network, security, and storage compliance resulting in improved business continuance, performance management, and security compliance. |
