Q40 — AWS SAA-C03 第8章

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Q535.一家公司使用高块存储容量在本地运行其工作负载.公司每天每秒的峰值输入输出交易不超过15,000 IOPS.该公司希望将工作负载迁移到 Amazon EC2，并独立于存储容量配置磁盘性能.哪种 Amazon Elastic Block Store (Amazon EBS) 卷类型能够最经济高效地满足这些要求?

正确答案: C. GP3卷类型

解析

To meet the company's requirements of migrating workloads to Amazon EC2 and provisioning disk performance independent of storage capacity while ensuring cost-effectiveness, the most suitable Amazon Elastic Block Store (Amazon EBS) volume type is: C. GP3 volume type.The GP3 (General Purpose SSD) volume type is designed to provide a balance of price and performance for a wide variety of workloads. It offers provisioned IOPS (input/output operations per second) and allows you to independently provision performance separate from storage capacity. In this scenario, the company's daily peak IOPS are not more than 15,000. GP3 volumes provide baseline performance levels that automatically adapt to the size of the volume, with a maximum baseline performance of 16,000 IOPS and a maximum burst performance of 1,000 MiB/s. This makes GP3 a cost-effective choice for workloads with moderate I/O requirements. Option A, GP2 volume type, is also a viable choice as it provides burst performance for periods of peak demand. However, GP3 volumes offer a higher baseline performance level and can be more cost-effective for this specific scenario. Option B, io2 volume type, is designed for critical business applications that require sustained high IOPS performance and low latency. While it provides higher performance than GP3, it may not be the most cost-effective option for the given workload requirements. Option D, io1 volume type, is designed for high-performance applications that require sustained IOPS performance. It offers provisioned IOPS and is typically more expensive than GP3 volumes. Since the given workload requirements can be met with GP3 volumes, io1 may not be the most cost-effective choice. Therefore, considering the cost-effectiveness while meeting the given requirements, the GP3 volume type (option C) would be the most suitable option for provisioning disk performance independent of storage capacity.为了满足公司将工作负载迁移到Amazon EC2，并在保证成本效益的同时独立于存储容量提供磁盘性能的需求，最适合的Amazon EBS卷类型为: C. GP3卷类型。GP3(通用SSD)卷类型旨在为各种工作负载提供价格和性能的平衡。它提供预置的IOPS(每秒输入/输出操作)，并允许您独立地预置与存储容量无关的性能。 在此场景下，公司的日峰值IOPS不超过15,000。GP3卷提供自动适应卷大小的基准性能水平，最大基准性能为16000 IOPS，最大突发性能为1000 MiB/s。这使得GP3成为具有中等I/O需求的工作负载的经济高效的选择。 选项A, GP2容量类型，也是一个可行的选择，因为它在高峰需求期间提供突发性能。然而，GP3卷提供了更高的基准性能水平，并且对于这个特定的场景更具成本效益。 选项B, io2卷类型，专为需要持续高IOPS性能和低延迟的关键业务应用而设计。虽然它提供了比GP3更高的性能，但对于给定的工作负载需求，它可能不是最经济有效的选择。 选项D为io1卷类型，适用于需要持续IOPS性能的高性能应用。它提供预置IOPS，并且通常比GP3卷更昂贵。由于GP3卷可以满足给定的工作负载需求，因此io1可能不是最经济有效的选择。 因此，在满足给定需求的同时考虑成本效益，GP3卷类型(选项C)将是独立于存储容量提供磁盘性能的最合适选项。