Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 728 discussion

B is the correct one because: "A company has an on-premises data center that is running out of storage capacity". So when they keep data on-premis and do the backup to S3 they'll run out of data and this is not their purpose.

B. Deploy AWS Storage Gateway using cached volumes. Use Storage Gateway to store data in Amazon S3 while retaining copies of frequently accessed data subsets locally. AWS Storage Gateway’s cached volumes let you use Amazon S3 as your primary data storage while retaining frequently accessed data locally in your storage gateway. Cached volumes minimize the need to scale your on-premises storage infrastructure, while still providing your applications with low-latency access to their frequently accessed data. All data transferred between your gateway and AWS storage is encrypted for security. You can also save on data transfer costs as AWS Storage Gateway compresses all data transferred between the gateway and AWS, allowing you to store more data in AWS while reducing your data transfer costs.

I'm going with answer C for all the reasons mentioned. The stored volumes is better in this case for the parameters specified including cost.

they want to limit onsite storage

In the cached Volume Gateway mode, your primary data is stored in Amazon S3, while retaining your frequently accessed data locally in the cache for low latency access. In the stored Volume Gateway mode, your primary data is stored locally and your entire dataset is available for low latency access on premises while also asynchronously getting backed up to Amazon S3

Another headache one. Well, I'll go for B for now. A - Really cost-effective, but immediate retrievals incurs additional costs. B - Less optimal for datasets where most data is accessed frequently and must be immediately available locally. C - The on-prem data center "is running out of storage capacity". Then why store everything locally? Why even migrate storage infrastructure to AWS... D - Like C, and also, bandwidth costs are not acceptable.

I vote "C" because Question doesn't mention to access frequent data. If they want access frequent data, I will vote "B" with cached volume.

AnswerB I think B answer is the best option here. We will store only data which are frequently accessed and all other we will sent to the cloud. So we will have access to all data but hence most frequently accessed data will be stored in On-Premises Cache we will not pay a lot of additionally $$ for data transfer if any.

C is the correct. answer

1- "The company wants to migrate its storage infrastructure to AWS" ->> B as data will be migrated to AWS. 2- "The solution must allow for immediate retrieval of data at no additional cost." ->> B as data will be stored in S3 Standard storage class which provide immediate data retrieval

immediate retrieval of data → shoud have full data set on-premises => stored volumes AWS Storage Gateway

B - as the company is migrating their data to AWS so data has to be stored in the cloud.

C>>> Cached Mode: In this mode, your primary data resides in Amazon S3, while frequently accessed data is cached locally for low-latency access. Stored Mode: Here, your entire dataset is stored locally, allowing low-latency access on premises. Simultaneously, the data is asynchronously backed up to Amazon S3.

D -> It takes One month to set up AWS Direct Connect setup A -> No sense as it talks nothing about On-Prem B -> Cached volume only stores frequently access data On-Prem, But requirement tells "Data" so we assume it tells All data C -> Correct, as Stored volumes stores everything in Storage Gateway On-Prem while asynchronously backing up to the cloud

option C... data being accessible through stored volume reduces bandwidth cost and provides immediate retrieval of data.

Option C, as it makes all the data available for low-latency access.