AWS Storage Gateway connects an on-prem software appliances with cloud-based storage (S3) to provide seamless integration with data security features. You can run AWS storage gateway as VM in your on-prem environment or as an EC2 instance in AWS Cloud. AWS storage gateway offers file-based, volume-based and tape-based storage solutions.
File Gateway: Supports a file interface to S3, you can store & retrieve files using industry standard protocols like Network File System (NFS) & Server Message Blocks (SMB).
Volume Gateway: There are 2 types ‘Cached Volume’ & ‘Stored Volume’. ‘Cached Volume’ – you can store data in S3 and retain a copy of frequently accessed data locally. ‘Stored Volume’ – configure on-prem gateway to store data locally and then async point-in-time backup to S3, results in low-latency. Before uploading to data to Amazon S3, gateway stores it in a staging area known as ‘upload buffer’.
Tape Gateway: You can cost-effectively & durably backup data in Glacier & Deep Archive; it provides virtual tape infrastructure.
Storage Gateway is used to store (snapshot) & retrieve (restore backup). Snapshots are stored with SSL encryption.
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