Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 705 discussion

No the answer is C as maximum allowed limit in stored Mode is 16 TB Volume Gateway Q: How much volume data can I manage per gateway? What is the maximum size of a volume? Each Volume Gateway can support up to 32 volumes. In cached mode, each volume can be up to 32 TB for a maximum of 1 PB of data per gateway (32 volumes, each 32 TB in size). In stored mode, each volume can be up to 16 TB for a maximum of 512 TB of data per gateway (32 volumes, each 16 TB in size). For more information, please refer to our documentation on Storage Gateway limits. Volume Gateways compress data before that data is transferred to AWS and while stored in AWS. This compression can reduce both data transfer and storage charges. Volume storage is not pre-provisioned; you will be billed for only the amount of data stored on the volume, not the size of the volume you create. https://aws.amazon.com/storagegateway/faqs/

"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. In either mode, you can take point-in-time copies of your volumes using AWS Backup, which are stored in AWS as Amazon EBS snapshots. Using Amazon EBS Snapshots enables you to make space-efficient versioned copies of your volumes for data protection, recovery, migration, and various other copy data needs."

"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. In either mode, you can take point-in-time copies of your volumes using AWS Backup, which are stored in AWS as Amazon EBS snapshots. Using Amazon EBS Snapshots enables you to make space-efficient versioned copies of your volumes for data protection, recovery, migration, and various other copy data needs."

D is the answer

D is right

Answer is D. Key from question is 'wants to ensure that end users retain immediate access to all file types from the on-premises systems without experiencing latency.' (note: all files => all data sets) why C is incorrect: Cached volume gateway provides you low-latency access to your frequently accessed data but not to the entire data.

The company wants to ensure that end users retain immediate access to all file types from the on-premises systems without experiencing latency.

The gateway supports the following volume configuration: Stored volumes – If you need low-latency access to your entire dataset, first configure your on-premises gateway to store all your data locally. Then asynchronously back up point-in-time snapshots of this data to Amazon S3. Low latency for all file types

Storage Gateway Volume Gateway Stored Mode should be used as users need access to all file types immediately. Q: What is Volume Gateway? Volume Gateway provides an iSCSI target, which enables you to create block storage volumes and mount them as iSCSI devices from your on-premises or EC2 application servers. The Volume Gateway runs in either a cached or stored mode. In the cached mode, your primary data is written to S3, while retaining your frequently accessed data locally in a cache for low-latency access. In the stored mode, your primary data is stored locally and your entire dataset is available for low-latency access while asynchronously backed up to AWS. In either mode, you can take point-in-time snapshots of your volumes, which are stored as Amazon EBS Snapshots in AWS, enabling you to make space-efficient versioned copies of your volumes for data protection, recovery, migration and various other copy data needs. https://aws.amazon.com/storagegateway/faqs/