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Exam AWS-SysOps topic 1 question 674 discussion

Exam question from Amazon's AWS-SysOps
Question #: 674
Topic #: 1
[All AWS-SysOps Questions]

An application accesses data through a file system interface. The application runs on Amazon EC2 instances in multiple Availability Zones, all of which must share the same data. While the amount of data is currently small, the company anticipates that it will grow to tens of terabytes over the lifetime of the application.
What is the MOST scalable storage solution to fulfill the requirement?

  • A. Connect a large Amazon EBS volume to multiple instances and schedule snapshots.
  • B. Deploy Amazon EFS is in the VPC and create mount targets in multiple subnets.
  • C. Launch an EC2 instance and share data using SMB/CIFS or NFS.
  • D. Deploy an AWS Storage Gateway cached volume on Amazon EC2.
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Suggested Answer: D 🗳️
by TJarriault at Sept. 18, 2019, 2:49 p.m.
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saumenP
Highly Voted 2 years, 7 months ago
B is correct, storage gateway is used to present on-prem data to AWS
upvoted 17 times
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TJarriault
Highly Voted 2 years, 7 months ago
in my mind, correct is "B"
upvoted 10 times
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albert_kuo
Most Recent 9 months, 3 weeks ago
Selected Answer: B
Amazon Elastic File System (Amazon EFS) is a scalable and fully managed file storage service that provides shared access to data from multiple EC2 instances. It is designed to provide scalable file storage that grows and shrinks automatically as the data size and access patterns change.
upvoted 1 times
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gulu73
1 year, 3 months ago
Selected Answer: B
vote for B
upvoted 1 times
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RicardoD
2 years, 5 months ago
B is the answer This is the use case for EFS
upvoted 3 times
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sasquatchshrimp
2 years, 6 months ago
Def B, EBS only works with one EC2 instance, EFS works with many.
upvoted 1 times
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dmolasaria
2 years, 6 months ago
It should be D. As Storage gateway uses S3 in backed and cache frequently accessible data, this is the best choice. Question mentioned the data amount is small (cache) and will scale in TBs. https://docs.aws.amazon.com/storagegateway/latest/userguide/WhatIsStorageGateway.html I'm surprised this time, examtopics mentioned the right answer.
upvoted 1 times
Bigdss
2 years, 5 months ago
But Storage gateway cached volume is iSCSI block storage, not file storage type (like EFS)
upvoted 1 times
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Mktk
2 years, 6 months ago
What if the EC2's are not Linux? (not mentioned in the question)
upvoted 1 times
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abhishek_m_86
2 years, 6 months ago
B. Deploy Amazon EFS is in the VPC and create mount targets in multiple subnets.
upvoted 2 times
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Chirantan
2 years, 6 months ago
Answer is B since EC2 Instance Need file system
upvoted 1 times
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jackdryan
2 years, 6 months ago
I'll go with B
upvoted 1 times
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MFDOOM
2 years, 6 months ago
B. Deploy Amazon EFS is in the VPC and create mount targets in multiple subnets.
upvoted 1 times
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gilbertlelancelo
2 years, 6 months ago
B. Deploy Amazon EFS is in the VPC and create mount targets in multiple subnets.
upvoted 1 times
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waterzhong
2 years, 6 months ago
in my mind, correct is "B"
upvoted 1 times
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asim1982
2 years, 6 months ago
Its B "Amazon Elastic File System (Amazon EFS) provides a simple, scalable, fully managed elastic NFS file system for use with AWS Cloud services and on-premises resources. It is built to scale on demand to petabytes without disrupting applications, growing and shrinking automatically as you add and remove files, eliminating the need to provision and manage capacity to accommodate growth." and then Amazon EFS is a regional service storing data within and across multiple Availability Zones (AZs) for high availability and durability. Amazon EC2 instances can access your file system across AZs, regions, and VPCs, while on-premises servers can access using AWS Direct Connect or AWS VPN"
upvoted 1 times
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KhatriRocks
2 years, 7 months ago
B is the ideal choice
upvoted 1 times
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AWS_Noob
2 years, 7 months ago
B - it says nothing about on premises so a storage gateway is definitely not an option
upvoted 1 times
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