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Exam AWS Certified Solutions Architect - Professional All Questions

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Exam AWS Certified Solutions Architect - Professional topic 1 question 608 discussion

A company needs to move its on-premises resources to AWS. The current environment consists of 100 virtual machines (VMs) with a total of 40 TB of storage.
Most of the VMs can be taken offline because they support functions during business hours only, however, some are mission critical, so downtime must be minimized.
The administrator of the on-premises network provisioned 10 Mbps of internet bandwidth for the migration. The on-premises network throughput has reached capacity and would be costly to increase. A solutions architect must design a migration solution that can be performed within the next 3 months.
Which method would fulfill these requirements?

  • A. Set up a 1 Gbps AWS Direct Connect connection. Then, provision a private virtual interface, and use AWS Server Migration Service (SMS) to migrate the VMs into Amazon EC2.
  • B. Use AWS Application Discovery Service to assess each application, and determine how to refactor and optimize each using AWS services or AWS Marketplace solutions.
  • C. Export the VMs locally, beginning with the most mission-critical servers first. Use AWS Transfer for SFTP to securely upload each VM to Amazon S3 after they are exported. Use VM Import/Export to import the VMs into Amazon EC2.
  • D. Migrate mission-critical VMs with AWS SMS. Export the other VMs locally and transfer them to Amazon S3 using AWS Snowball. Use VM Import/Export to import the VMs into Amazon EC2.
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Suggested Answer: A 🗳️

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Nemer
Highly Voted 3 years, 8 months ago
D. 40 TB transfer -> snowball. SMS only needed for the mission-critical VMs that would need live incremental replication with no downtime.
upvoted 25 times
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Justu
Highly Voted 3 years, 7 months ago
To transfer 40TB of data in 10Mbps link, it will take 400 days. So transferring anything over that link in 3 months is not feasible. Rules C out. Direct Connect link is needed only while migration period. So ordering that for just 3 months doesn't seem correct. Also it's a costly option. Rules out A. And refactoring 100 applications in 3 months, doesn't sound right to me as well. Rules out B. So left will be D. Problem with D is that Snowball transfer also takes some time, but I guess it's OK for non critical systems to be down for week. If we can use the on-prem servers while setupping AWS instances and then transfer only the delta of data, the downtime then will be minimized.
upvoted 10 times
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hilft
Most Recent 2 years, 10 months ago
snowball. other options will take forever.
upvoted 2 times
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kyo
3 years, 4 months ago
Selected Answer: D
AWS Server Migration Service is better than VM I/E.
upvoted 1 times
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cldy
3 years, 5 months ago
D correct.
upvoted 1 times
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AzureDP900
3 years, 6 months ago
D is right answer. A is not correct
upvoted 1 times
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tgv
3 years, 7 months ago
DDD ---
upvoted 1 times
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levy_k
3 years, 7 months ago
I will go with A, firstly, there is no concern about the cost in the topic. customer's purpose is to migrate all service and data to aws in 3 months without any affect for end user. For D, with snowball, the service and old data can be migrate to aws in weeks, but how to process the datas generated during the weeks? only 10Mb network obviously is not the correct solution. Customer sholud find a solution to keep the data consistent.
upvoted 3 times
Viper57
3 years, 7 months ago
You did not read the question. " The on-premises network throughput has reached capacity and would be costly to increase. Cost is a concern, so a 1 Gbps Direct Connect connection would definitely be too expensive.
upvoted 4 times
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zolthar_z
3 years, 7 months ago
I think the solution is D, the key is the cost limitation. There is a reason to put that in the question. The direct connect is the best solution if you don't have a budget problem. With D you can create a copy of the non-essentials VMs, work with the on-premise while the VMs arrive and are deployed in EC2.
upvoted 3 times
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WhyIronMan
3 years, 7 months ago
I'll go with D
upvoted 2 times
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Kopa
3 years, 7 months ago
D, since customer is not willing to make additional cost with direct connect. Also not full 40 TB are to be migrated as some of data will offloaded to Snowball device.
upvoted 2 times
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tvs
3 years, 7 months ago
Should be D . SMS transfer vmdk to s3 which Need public virtual interface over DX. https://aws.amazon.com/blogs/apn/aws-server-migration-service-server-migration-to-the-cloud-made-easy/
upvoted 2 times
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blackgamer
3 years, 7 months ago
D is the solution.
upvoted 1 times
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Waiweng
3 years, 7 months ago
it's D
upvoted 2 times
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natpilot
3 years, 7 months ago
A for sure, direct connect can be establiched in 1 month and is more indicated for critical vm migration; for D, after VM import, how is feasible to do the data resync of about 3 days of data with 10Mbps full used?
upvoted 2 times
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elf78
3 years, 7 months ago
D - Assuming mission critical VMs are migrated using SMS via existing link and others via Snowball. All other options don't sound reasonable.
upvoted 2 times
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Ebi
3 years, 7 months ago
A for sure, D is not the option, snowball migration takes weeks while non-critical VMs must be available during business hours.
upvoted 6 times
Ebi
3 years, 7 months ago
After further review I guess this questions does not have any correct answer: A: Is not correct, as mentioned in other comments, private VIF will work for connecting to VPC not public services like S3 B: No sense, it is talking discover not actual migration C: No sense, no needed to have SFTP D: Transferring VMs using Snowball will take weeks while as per question non-critical application are used during business hours Very bad question
upvoted 4 times
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A (35%)
C (25%)
B (20%)
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