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Availability with Single Attached Server 1G or 10G§  Important to evaluate the overall availability of the system. Network failures can span many nodes in the system causing rebalancing and decreased overall resources. Typically multi-TB of data transfer occurs for a single ToR or FEX failure Load Sharing, ease of management and consistent SLA is important to enterprise operation§  Failure Domain Impact on Job Completion§  1 TB Terasort typically Takes ~4.20- 4.30 minutes§  A failure of a SINGLE NODE (either NIC or server component) results in roughly doubling of the job completion time§  Key observation is that the failure impact is dependent on type of workload being run on the Single NIC cluster 32 per ToR Short lived interactive vs. Short live batch Long job – ETL, Normalization, Joins 36

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