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AWS Storage Gateway — Hybrid cloud storage solution
AWS Storage Gateway seamlessly connects on-premises environments with cloud storage, bridging the gap between on-premises and AWS.
What it is
- A hybrid cloud storage service that enables on-premises applications to use cloud storage.
- Provides three types of gateways: File Gateway, Volume Gateway, and Tape Gateway.
When I reach for it
- When you need to integrate on-premises applications with AWS cloud storage.
- For backup and archiving solutions to AWS S3.
- To migrate data to the cloud while maintaining low-latency access to frequently used data.
Key architectural decisions
- Choose File Gateway for NFS/SMB file shares or Volume Gateway for block storage.
- Use Tape Gateway for cloud-based backup solutions with virtual tape libraries.
- Consider data transfer costs and network bandwidth when planning migrations.
Gotchas & exam traps
- Be aware of the data transfer limits and performance implications of using different gateway types.
- Understand the caching mechanisms; not all data is stored locally.
- Remember that data written to the cloud is immutable and cannot be altered once uploaded.
The architect view
- Leverage Storage Gateway to extend your on-premises storage to the cloud, enabling scalability and cost savings.
- Ensure you have a solid backup and recovery strategy, as data accessibility can vary based on the gateway type.