Topic 1 Question 128
You have an application on a general-purpose Compute Engine instance that is experiencing excessive disk read throttling on its Zonal SSD Persistent Disk. The application primarily reads large files from disk. The disk size is currently 350 GB. You want to provide the maximum amount of throughput while minimizing costs. What should you do?
Increase the size of the disk to 1 TB.
Increase the allocated CPU to the instance.
Migrate to use a Local SSD on the instance.
Migrate to use a Regional SSD on the instance.
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C is correct, local SSD has more IOPS
👍 34DarioFama232020/07/09Correct Answer is (C):
Performance
Standard persistent disks are efficient and economical for handling sequential read/write operations, but they aren't optimized to handle high rates of random input/output operations per second (IOPS). If your apps require high rates of random IOPS, use SSD persistent disks. SSD persistent disks are designed for single-digit millisecond latencies. Observed latency is application specific.
👍 16ESP_SAP2020/08/21Correct Answer is B From both tables: https://cloud.google.com/compute/docs/disks/performance#performance_by_disk_size https://cloud.google.com/compute/docs/disks/performance#machine-type-disk-limits
The general purpose vm limit is less than ssd persistent disk size limit of 250-500
👍 3Soso_zozo2022/04/06
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