AWS Storage Gateway is a fully-managed service offered by Amazon Web Services (AWS) that enables you to store and retrieve data from on-premises storage systems using the AWS Cloud. It provides a bridge between your on-premises storage systems and the AWS Cloud, allowing you to use the scalability, reliability, and security of AWS storage services while still keeping your data on-premises.
There are three different types of AWS Storage Gateway: File Gateway, Volume Gateway, and Tape Gateway.
File Gateway is designed for storing and retrieving files from the AWS Cloud. It provides a file interface to Amazon S3, allowing you to store and retrieve files using standard file system protocols such as Network File System (NFS) and Server Message Block (SMB).
Volume Gateway is designed for storing and backing up data from on-premises storage systems to the AWS Cloud. It provides two different storage options: Stored Volumes, which allows you to store data locally and asynchronously back it up to Amazon S3, and Cached Volumes, which allows you to store data in Amazon S3 and cache a copy locally for fast access.
Tape Gateway is designed for storing and archiving data on tapes. It allows you to store and retrieve data from tapes using standard tape library protocols such as Linear Tape-Open (LTO) and Virtual Tape Library (VTL).