Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 329 discussion

B & D is the right choice.

Answer is B and D. https://aws.amazon.com/storagegateway/file/ File Gateway provides a seamless way to connect to the cloud in order to store application data files and backup images as durable objects in Amazon S3 cloud storage. File Gateway offers SMB or NFS-based access to data in Amazon S3 with local caching. It can be used for on-premises applications, and for Amazon EC2-based applications that need file protocol access to S3 object storage. https://aws.amazon.com/storagegateway/volume/ Volume Gateway presents cloud-backed iSCSI block storage volumes to your on-premises applications. Volume Gateway stores and manages on-premises data in Amazon S3 on your behalf and operates in either cache mode or stored mode. 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.

B and D are the answers

B & D because they support local caching, EFS does not do so.

Key: --> on-prem arch where storage capacity is going to exhaust --> usage of both block & NFS Requirements: High Performance with local caching without re-architecting solution Distractors: A/B/C A is completely wrong as s3 is a block storage and cannot be mounted as FS B is probably one of the reasonable solution but it is not better when we have EFS in the options for NFS mount command has an option of fsc – which enables local file caching, without changing NFS cache coherency, and reducing latencies so a distractor C is a migration service S3 service D/E D is the best solution for caching block storage data on prem and also backing up to AWS similarly as mentioned in point B it is the convenient solution for NFS local caching and storage

BD for block storage - volume gateway, for NFS - file gateway

BD, Introducing AWS Storage Gateway AWS Storage Gateway is a hybrid cloud storage service that gives you on-premises access to virtually unlimited cloud storage. Customers use Storage Gateway to simplify storage management and reduce costs for key hybrid cloud storage use cases. These include moving backups to the cloud, using on-premises file shares backed by cloud storage, and providing low latency access to data in AWS for on-premises applications. To support these use cases, the service provides four different types of gateways – Tape Gateway, Amazon S3 File Gateway, Amazon FSx File Gateway, and Volume Gateway – that seamlessly connect on-premises applications to cloud storage, caching data locally for low-latency access.

Storage gateway on-prem -> AWS + LOCAL CACHING

B&D is the answer....EFS does not support local caching

I think the answer is D & E Without re-architecting for NFS we can use NFS read_ahead_kb for the caching in EFS https://docs.aws.amazon.com/efs/latest/ug/performance-tips.html

B & D is the answer

AWS EFS sounds like it can only be available to on premise host via AWS Direct Connect or AWS VPN. None of these are options that are listed. Please see this resource https://aws.amazon.com/efs/and listen to the video... B and D seem like the best options here

Keyword "without re-architecting its existing applications" B and D

D& E is the right...

Answer is B and D.

B and D for sure

B + D for me. Could someone justify how would E meet caching requirements?