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RAS: Reliability, Availability, and Serviceability Features in Operating Systems and Servers: Perspective

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Server vendors continue to emphasize the reliability, availability, and serviceability (RAS) features built into their products. In addition to the traditional set of RAS features such as parity checks and ECC memories as servers are deployed to support the Internet and e-business, any outages regardless of the cause must be avoided. Under the umbrella of RAS features are new operating system capabilities that allow online repair, reconfiguration, capacity additions, and software upgrades by making use of built-in hardware RAS features. Choosing the set of RAS features for a server depends on understanding how the server is to be used, the business consequences of server outages, and the physical environment where the server is located.


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