Your company currently has issues in trying to expand its on-premises storage capabilities.
They are looking at AWS for extending their storage for their applications.
The new storage should be available as iSCSI targets which can be referenced by the on-premises servers.
Which of the following would you use for this purpose?
Click on the arrows to vote for the correct answer
A. B. C. D.Answer - A.
The AWS Documentation mentions the following.
Using cached volumes, you can 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.
You can create storage volumes up to 32 TiB in size and attach them as iSCSI devices from your on-premises application servers.
Your gateway stores data that you write to these volumes in Amazon S3 and retains recently read data in your on-premises storage gateway's cache and upload buffer storage.
Option B is incorrect since this is used for volume storage for EC2 Instances.
Option C is incorrect since this is used for NoSQL storage.
Option D is incorrect since this is used for object storage.
For more information on storage gateway concepts, please refer to the below URL-
https://docs.aws.amazon.com/storagegateway/latest/userguide/StorageGatewayConcepts.htmlThe best option for extending on-premises storage with iSCSI targets on AWS is Storage Gateway Cached Volumes (option A).
Storage Gateway is a hybrid storage service that enables on-premises applications to seamlessly use cloud storage. It provides an iSCSI interface to access AWS storage services such as S3, EBS, and Glacier.
Storage Gateway Cached Volumes is the ideal solution for expanding on-premises storage because it provides low-latency access to frequently used data while storing all data in S3. Cached Volumes stores the most recently accessed data on-premises in a cache, minimizing access to S3 and reducing costs.
EBS Volumes (option B) are block-level storage devices that are attached to EC2 instances. While EBS Volumes can be used as iSCSI targets, they are not designed to extend on-premises storage.
DynamoDB tables (option C) are NoSQL databases that provide low-latency performance at any scale. However, they are not designed to provide iSCSI targets for on-premises storage.
S3 storage (option D) is a durable, scalable object storage service that can store and retrieve any amount of data. While S3 can be accessed via iSCSI using the Storage Gateway service, it does not provide iSCSI targets directly.
In summary, Storage Gateway Cached Volumes is the best option for extending on-premises storage with iSCSI targets on AWS. It provides low-latency access to frequently used data and stores all data in S3, minimizing costs.