Q43 — AWS SAA-C03 Ch.5

Question 43 of 65 | ← Chapter 5

Q343. A company wants to implement a disaster recovery plan for its primary on-premises file storage volume. The file storage volume is mounted from an Internet Small Computer Systems Interface (iSCSI) device on a local storage server. The file storage volume holds hundreds of terabytes (TB) of data. The company wants to ensure that end users retain immediate access to all file types from the on-premises systems without experiencing latency.Which solution will meet these requirements with the LEAST amount of change to the company's existing infrastructure?

• A. Provision an Amazon S3 File Gateway as a virtual machine (VM) that is hosted on premises Set the local cache to 10 TB. Modify existing applications to access the files through the NFS protocol. To recover from a disaster. provision an Amazon EC2 instance and mount the S3 bucket that contains the files
• B. Provision an AWS Storage Gateway tape gateway Use a data backup solution to back up all existing data to a virtual tape library Configure the data backup solution to run nightly after the initial backup is complete. To recover from a disaster. provision an Amazon EC2 instance and restore the data to an Amazon Elastic Block Store (Amazon EBS) volume from the volumes in the virtual tape library
• C. Provision an AWS Storage Gateway Volume Gateway cached volume. Set the local cache to 10 TB Mount the Volume Gateway cached volume to the existing file server by using iSCSI, and copy all files to the storage volume. Configure scheduled snapshots of the storage volume To recover from a disaster, restore a snapshot to an Amazon Elastic Block Store (Amazon EBS) volume and attach the EBS volume to an Amazon EC2 instance
• D. Provision an AWS Storage Gateway Volume Gateway stored volume with the same amount of disk space as the existing file storage volume. Mount the Volume Gateway stored volume to the existing file server by using iSCSI, and copy all files to the storage volume. Configure scheduled snapshots of the storage volume To recover from a disaster,restore a snapshot to an Amazon Elastic Block Store (Amazon EBS) volume and attach the EBS volume to an Amazon EC2 instance ✓

Correct Answer: D. Provision an AWS Storage Gateway Volume Gateway stored volume with the same amount of disk space as the existing file storage volume. Mount the Volume Gateway stored volume to the existing file server by using iSCSI, and copy all files to the storage volume. Configure scheduled snapshots of the storage volume To recover from a disaster,restore a snapshot to an Amazon Elastic Block Store (Amazon EBS) volume and attach the EBS volume to an Amazon EC2 instance

Explanation

Option A: Provisioning an Amazon S3 File Gateway as a virtual machine hosted on-premises and modifying existing applications to access files through the NFS protocol could be complex and require significant changes to the company's existing infrastructure. It may also introduce latency issues that could impact end-user access to files.Option B: Provisioning an AWS Storage Gateway tape gateway and using a backup solution to back up all existing data to a virtual tape library and configuring the data backup solution to run nightly after the initial backup is complete would require significant operational overhead. Restoring data from virtual tapes to an Amazon EBS volume would also take time, which could impact end-user access to files. Option C: Although option C could be a good solution, provisioning a Volume Gateway cached volume that has enough capacity to store hundreds of TBs of data could be expensive. Additionally, copying all the data from the on-premises file storage volume to the Volume Gateway cached volume could take a long time and affect the end-users' access to files.Option D: Provisioning an AWS Storage Gateway Volume Gateway stored volume with the same amount of disk space as the existing file storage volume, mounting it to the existing file server using iSCSI, copying all files to the storage volume, and configuring scheduled snapshots of the storage volume is the simplest option to meet the requirements. Restoring a snapshot to an Amazon EBS volume and attaching it to an EC2 instance would provide immediate access to all file types without experiencing latency. Therefore, option D is the best solution because it meets the requirements with the least amount of change to the company's existing infrastructure by provisioning an AWS Storage Gateway Volume Gateway stored volume, mounting it to the existing file server using iSCSI, and configuring scheduled snapshots of the storage volume.