AWS Certified Solutions Architect - Associate
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A company uses on-premises servers to host its applications. The company is running out of storage capacity. The applications use both block storage and NFS storage. The company needs a high-performing solution that supports local caching without re-architecting its existing applications.
Which combination of actions should a solutions architect take to meet these requirements? (Choose two.)
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A
Mount Amazon S3 as a file system to the on-premises servers.
B
Deploy an AWS Storage Gateway file gateway to replace NFS storage.
C
Deploy AWS Snowball Edge to provision NFS mounts to on-premises servers.
D
Deploy an AWS Storage Gateway volume gateway to replace the block storage.
E
Deploy Amazon Elastic File System (Amazon EFS) volumes and mount them to on-premises servers.
Explanation:
Explanation
Correct Answers: B and D
B. Deploy an AWS Storage Gateway file gateway to replace NFS storage.
- AWS Storage Gateway File Gateway provides a file interface to Amazon S3, allowing you to store and retrieve objects as files.
- It supports NFS (Network File System) and SMB (Server Message Block) protocols, making it compatible with existing NFS-based applications.
- It includes local caching capabilities for frequently accessed data, which improves performance.
D. Deploy an AWS Storage Gateway volume gateway to replace the block storage.
- AWS Storage Gateway Volume Gateway provides iSCSI block storage volumes that can be mounted as local storage by on-premises applications.
- It supports both cached volumes (where frequently accessed data is cached locally) and stored volumes (where all data is stored locally and asynchronously backed up to AWS).
- This allows existing block storage applications to work without re-architecting.
Why other options are incorrect:
A. Mount Amazon S3 as a file system to the on-premises servers.
- While tools like S3FS exist to mount S3 as a file system, they don't provide the same level of performance, local caching, or protocol compatibility as Storage Gateway.
- S3 is object storage, not designed for direct file system mounting with high performance requirements.
C. Deploy AWS Snowball Edge to provision NFS mounts to on-premises servers.
- AWS Snowball Edge is designed for data transfer and edge computing, not for ongoing storage expansion with local caching.
- It's a temporary solution for data migration, not a permanent storage expansion solution.
E. Deploy Amazon Elastic File System (Amazon EFS) volumes and mount them to on-premises servers.
- Amazon EFS is designed for AWS cloud environments and requires AWS Direct Connect or VPN connectivity.
- While EFS can be accessed from on-premises via AWS Direct Connect, it doesn't provide local caching capabilities at the on-premises location.
- The performance would be limited by network latency between on-premises and AWS.
Key Requirements Met:
- Supports both block and NFS storage - Volume Gateway for block storage, File Gateway for NFS storage
- Local caching - Both Storage Gateway solutions support local caching
- No re-architecting - Uses standard protocols (iSCSI for block, NFS for file)
- High-performing - Local caching improves performance for frequently accessed data
- Expands storage capacity - Backed by virtually unlimited AWS cloud storage
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