iSCSI Devices for On-Premises Application Servers
Question
A company needs to extend its storage infrastructure to the AWS Cloud.
The storage needs to be available as iSCSI devices for on-premises application servers.
What should be done to fulfill this requirement?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.Correct Answer - D.
AWS Documentation mentions the following:
By 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 TB in size and attach iSCSI devices to them from your on-premises application servers.
Your gateway stores data that you write to these volumes in Amazon S3, retains recently read data in your on-premises storage gateway's cache, and upload buffer storage.
Options A, B and C are incorrect because they cannot be mounted as iSCSI devices to the on-premises application servers.
Option D is CORRECT because AWS Storage Gateway connects an on-premises software appliance with cloud-based storage to provide seamless integration with data security features between your on-premises IT environment and the AWS storage infrastructure.
The storage can also be mounted as iSCSI devices to the on-premises application servers.
For more information on AWS Storage Gateways, please visit the following URL:
https://docs.aws.amazon.com/storagegateway/latest/userguide/StorageGatewayConcepts.htmlThe correct answer for this scenario is D. Use the AWS Storage Gateway-cached volumes service.
Explanation:
The AWS Storage Gateway service is a hybrid storage service that allows on-premises applications to use AWS cloud storage. It supports several types of storage protocols, including iSCSI.
The Storage Gateway service provides three types of storage volumes - cached volumes, stored volumes, and tape gateway. In this scenario, the appropriate service to fulfill the requirement is the Storage Gateway-cached volumes service.
The Storage Gateway-cached volumes service stores frequently accessed data on-premises while keeping a copy of all the data securely in Amazon S3. This service allows customers to use AWS storage with their existing applications and provides low-latency access to frequently accessed data while still benefiting from the durability and scalability of Amazon S3.
Here's how to set up the Storage Gateway-cached volumes service:
Launch the AWS Storage Gateway service from the AWS Management Console.
Select the "cached volumes" option and create a gateway.
Install the Storage Gateway virtual machine or software appliance on-premises and connect it to the gateway.
Configure the iSCSI target on the Storage Gateway service.
Mount the iSCSI device on the on-premises application servers.
With these steps, the iSCSI devices are now available for the on-premises application servers.
Option A is incorrect because Glacier is an archival storage service designed for infrequently accessed data, and Glacier Connector is not used to mount data as iSCSI devices.
Option B is incorrect because S3 is an object storage service and cannot be mounted as an iSCSI device directly.
Option C is incorrect because EFS is a file storage service, and while it can be mounted to on-premises servers, it does not support iSCSI.
