GCP Professional Cloud Architect Practice Question
A data-engineering team is migrating a nightly log-processing workload to a single Compute Engine VM. The VM will attach a 10-TiB persistent disk, stream the log files sequentially for about 2 hours, write the summarized results, and then stay idle until the next night. They need to minimize storage cost, but they must sustain high sequential throughput; sub-millisecond latency or very high random IOPS are not required. Which persistent disk type should they choose?
pd-standard (HDD-backed Standard persistent disk) is optimized and priced for large, sequential I/O patterns such as batch analytics. At 10 TiB it can deliver hundreds of MB/s of aggregate sequential throughput-enough for the nightly job-at the lowest cost per GiB. pd-balanced and pd-ssd offer much lower latency and higher random IOPS, but their price per GiB is significantly higher, making them unnecessarily expensive for this workload. Local SSD is not persistent and incurs additional operational complexity, so it is not appropriate.
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What distinguishes pd-standard from pd-ssd and pd-balanced?
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Why is local SSD not suitable for this workload?
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What types of workloads are best suited for pd-standard disks?
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What is a Standard Persistent Disk (pd-standard)?
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How does pd-standard compare to pd-balanced and pd-ssd in performance and cost?
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Why is Local SSD not appropriate for this workload?
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GCP Professional Cloud Architect
Managing and provisioning a solution infrastructure
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