SAP-C02 · Question #659
Accompany is deploying a new cluster for big data analytics on AWS. The cluster will run across many Linux Amazon EC2 instances that are spread across multiple Availability Zones. All of the nodes…
The correct answer is D. Provision a new Amazon Elastic File System (Amazon EFS) file system that uses Max I/O. The requirement is for a highly available, resilient, POSIX-compatible shared file storage solution for big data analytics across multiple EC2 instances in different AZs, demanding high throughput.
Question
Accompany is deploying a new cluster for big data analytics on AWS. The cluster will run across many Linux Amazon EC2 instances that are spread across multiple Availability Zones. All of the nodes in the cluster must have read and write access to common underlying file storage. The file storage must be highly available, must be resilient, must be compatible with the Portable Operating System Interface (POSIX), and must accommodate high levels of throughput. Which storage solution will meet these requirements?
Options
- AProvision an AWS Storage Gateway file gateway NFS file share that is attached to an Amazon S3
- BProvision a new Amazon Elastic File System (Amazon EFS) file system that uses General
- CProvision a new Amazon Elastic Block Store (Amazon EBS) volume that uses the io2 volume
- DProvision a new Amazon Elastic File System (Amazon EFS) file system that uses Max I/O
How the community answered
(22 responses)- A9% (2)
- B5% (1)
- C14% (3)
- D73% (16)
Why each option
The requirement is for a highly available, resilient, POSIX-compatible shared file storage solution for big data analytics across multiple EC2 instances in different AZs, demanding high throughput.
AWS Storage Gateway file gateway is primarily for hybrid cloud environments extending on-premises storage to S3 and is not optimized for high-throughput, shared file access across multiple EC2 instances within AWS for big data analytics.
Amazon EFS provides a fully managed, scalable, and highly available shared file system that is POSIX-compliant and accessible concurrently from multiple EC2 instances across Availability Zones. The Max I/O performance mode is specifically designed to support high aggregate throughput and IOPS for large-scale parallel workloads like big data analytics, directly meeting the performance requirements.
Concept tested: EFS performance modes for high-throughput shared storage
Source: https://docs.aws.amazon.com/efs/latest/ug/performance-modes.html
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