Beyond Redundancy: How Geographic Redundancy Can Improve by Eric Bauer

By Eric Bauer

How Geographic Redundancy Can increase provider Availability and Reliability of Computer-Based SystemsEnterprises make major investments in geographically redundant platforms to mitigate the most unlikely threat of a common or man-made catastrophe rendering their fundamental web site inaccessible or destroying it thoroughly. whereas geographic redundancy has noticeable merits for catastrophe restoration, it really is some distance much less noticeable what gain georedundancy deals for extra universal undefined, software program, and human mess ups. past Redundancy offers either a theoretical and sensible therapy of the possible and sure advantages from geographic redundancy for either carrier availability and repair reliability.The booklet is prepared into 3 sections:Basics presents the mandatory heritage on georedundancy and repair availabilityModeling and research of Redundancy supplies the technical and mathematical info of provider availability modeling of georedundant configurationsRecommendations bargains particular tips on structure, requisites, layout, trying out, and research of georedundant configurationsA entire georedundant case learn is integrated to demonstrate the thoughts. The ebook considers either georedundant structures and georedundant ideas. The textual content additionally offers a common dialogue in regards to the capital expense/operating rate tradeoff that frames procedure redundancy and georedundancy. those additional positive aspects make past Redundancy a useful source for network/system planners, IS/IT team of workers, method architects, procedure engineers, builders, testers, and catastrophe recovery/business continuity experts and planners.

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Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems

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 danger of a usual or man-made catastrophe rendering their fundamental website inaccessible or destroying it thoroughly.

Extra info for Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems

Example text

When discussing an interface between two elements, one of the elements is the client (the element requesting a service) and the other is the server (the element providing the service). If an element has multiple interfaces, it could be the server on some interfaces and a client on others. Solutions are comprised of one or more network elements, like firewalls, load balancers, application servers, database servers, element management systems, billing servers, provisioning servers, and so on. 5 Service Impact and Element Impact Outages Differentiating network elements from systems enables one to more precisely measure service availability of complex services.

Sophisticated enterprises will tie performance of key service availability, reliability, and/or quality metrics of critical systems to compensation to assure that maintenance staffs are fully motivated to assure excellent performance of these key metrics. 2 Minimum Chargeable Disruption Duration Failures are inevitable and real high-availability mechanisms must take a finite amount of time to detect and isolate a failure, initiate a failover or other recovery action, and restore user service. , protocol timeouts and retry strategies) are planned accordingly.

Catastrophic events that impact critical infrastructure ingredients and cannot rapidly be recovered locally are typically mitigated by having a redundant system at a facility that is physically separated from the primary facility by a far enough distance that the catastrophic event which impacts the primary site will not impact the geographically redundant site. 4â•…Geographically Separated Recovery Site  11 other processes and procedures are used to assure that critical services can be promptly recovered to the geographically redundant (or georedundant) site following catastrophic failure.

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