By Eric Bauer
How Geographic Redundancy Can increase provider Availability and Reliability of Computer-Based SystemsEnterprises make major investments in geographically redundant structures to mitigate the most unlikely probability of a traditional or man-made catastrophe rendering their fundamental website inaccessible or destroying it thoroughly. whereas geographic redundancy has noticeable merits for catastrophe restoration, it really is a ways much less noticeable what gain georedundancy bargains for extra universal undefined, software program, and human disasters. past Redundancy presents either a theoretical and functional therapy of the possible and certain advantages from geographic redundancy for either provider availability and repair reliability.The ebook is prepared into 3 sections:Basics presents the required heritage on georedundancy and repair availabilityModeling and research of Redundancy supplies the technical and mathematical info of provider availability modeling of georedundant configurationsRecommendations deals particular tips about structure, necessities, layout, trying out, and research of georedundant configurationsA entire georedundant case examine is incorporated to demonstrate the innovations. The publication considers either georedundant structures and georedundant recommendations. The textual content additionally offers a common dialogue concerning the capital expense/operating rate tradeoff that frames approach redundancy and georedundancy. those extra good points make past Redundancy a useful source for network/system planners, IS/IT body of workers, process architects, method engineers, builders, testers, and catastrophe recovery/business continuity experts and planners.
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Additional info for Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems
Federal Aviation Administration, 2008). 6 Service, Risk, and Business Continuity • redundancy configuration and dimensioning of system hardware; system operation and maintenance procedures, including how promptly security and stability patches are installed; • required training and experience of staff; • characteristics of the physical environment and networking infrastructure; • security policy, including what security appliances protect the system from cyber security attack; and • configuration and setting of network and application protocol options.
Implement emergency action procedures to protect the staff at the impacted site, and protect equipment and assets. 16 Service, Risk, and Business Continuity 2. Activate enterprise’s emergency management team to assess damage. 3. Decide whether or not to activate disaster recovery plan—an appropriate enterprise leader considers the assessment and recommendation of the emergency management team and decides whether to: • invoke disaster recovery plan and restore service onto recovery site; or • restore service onto affected primary site ASAP.
3. Redundant systems are engineered to carry sufficient traffic to support normal capacity (or minimum acceptable) traffic loads when primary system or site is unavailable. To mitigate the risk of site destruction or site inaccessibility, enterprises will often deploy a redundant set of core elements on a recovery site at a geographically remote location. Recovery site options are broadly classified as follows: 1. â•‡ The enterprise can simply plan to find a new facility after a disaster occurs, and have the replacement equipment delivered and installed at that new facility.