Virtualized infrastructure-as-a-service (IaaS) has drawn increasing attention and usage due to its granular billing, ease-of-use, and broad network access. Bare-metal cloud services, which are essentially physical servers that can be deployed on demand and billed hourly, can offer significant improvements over virtualized IaaS in performance, consistency and cost efficiency for many applications. Benchmark tests comparing similarly sized virtual and bare-metal cloud configurations reveal that bare-metal cloud yields superior CPU, RAM, storage, and internal network performance. Predictably, solid-state drive (SSD) configurations showed substantially higher disk performance measures when compared with spinning serial ATA (SATA) drives, although processor, memory and network results between the two configurations were virtually identical. Cost efficiency, measured by performance-weighting the prices, was also measurably higher with the tested bare-metal cloud deployment inferring superior value from bare-metal cloud, all-else-equal.
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