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AWS Storage Gateway

The AWS Storage Gateway is a service connecting an on-premises software appliance with cloud-based storage to provide seamless and secure integration between an organization's on-premises IT environment and AWS's storage infrastructure. The service allows you to securely store data in the AWS cloud for scalable and cost-effective storage. The AWS Storage Gateway supports industry-standard storage protocols that work with your existing applications. It provides low-latency performance by maintaining frequently accessed data on-premises while securely storing all of your data encrypted in Amazon Simple Storage Service (Amazon S3) or Amazon Glacier.

The AWS Storage Gateway supports three configurations:

Gateway-Cached Volumes:
You can store your primary data in Amazon S3, and retain your frequently accessed data locally. Gateway-Cached volumes provide substantial cost savings on primary storage, minimize the need to scale your storage on-premises, and retain low-latency access to your frequently accessed data.

Gateway-Stored Volumes:
In the event you need low-latency access to your entire data set, you can configure your on-premises data gateway to store your primary data locally, and asynchronously back up point-in-time snapshots of this data to Amazon S3. Gateway-Stored volumes provide durable and inexpensive off-site backups that you can recover locally or from Amazon EC2 if, for example, you need replacement capacity for disaster recovery.

Gateway-Virtual Tape Library (Gateway-VTL):
With Gateway-VTL you can have a limitless collection of virtual tapes. Each virtual tape can be stored in a Virtual Tape Library backed by Amazon S3 or a Virtual Tape Shelf backed by Amazon Glacier. The Virtual Tape Library exposes an industry standard iSCSI interface which provides your backup application with on-line access to the virtual tapes. When you no longer require immediate or frequent access to data contained on a virtual tape, you can use your backup application to move it from its Virtual Tape Library to your Virtual Tape Shelf in order to further reduce your storage costs.


  • Secure
    The AWS Storage Gateway securely transfers your data to AWS over SSL and stores data encrypted at rest in Amazon S3 and Amazon Glacier using Advanced Encryption Standard (AES) 256, a secure symmetric-key encryption standard using 256-bit encryption keys.
  • Durably backed
    The AWS Storage Gateway durably stores your on-premises application data by uploading it to Amazon S3 and Amazon Glacier. Amazon S3 and Amazon Glacier redundantly store data in multiple facilities and on multiple devices within each facility. Amazon S3 and Amazon Glacier also perform regular, systematic data integrity checks and are built to be automatically self-healing.
  • Compatible
    There is no need to re-architect your on-premises applications. Gateway-Cached volumes and Gateway-Stored volumes expose a standard iSCSI block disk device interface and Gateway-VTL presents a standard iSCSI virtual tape library interface.
  • Cost-Effective
    AWS Storage Gateway reduces the cost, maintenance, and scaling challenges associated with managing primary, backup and archive storage environments. You pay only for what you use with no long-term commitments.
  • Designed for use
    Gateway-Stored volumes and Gateway-Cached volumes are designed to seamlessly integrate, by enabling you to store point-in-time snapshots of your on-premises application data in Amazon S3 as Amazon EBS snapshots for future recovery on-premises or in Amazon EC2.
  • Optimized for Network Efficiency
    The AWS Storage Gateway efficiently uses your internet bandwidth to speed up the upload of your on-premises application data to AWS. The AWS Storage Gateway only uploads data that has changed, minimizing the amount of data sent over the internet.

Use Cases

  • Backup
    The AWS Storage Gateway enables your existing on-premise to cloud backup applications to store primary backups on Amazon S3's scalable, reliable, secure, and cost-effective storage service. You can create Gateway-Cached storage volumes and mount them as iSCSI devices to your on-premises backup application servers.
  • Disaster Recovery
    The AWS Storage Gateway, together with EC2, can mirror your entire production environment for disaster recovery (DR). Planning for business continuity in the event of a power outage, fire, flood, or other disaster can be challenging.
  • Corporate File Sharing
    The AWS Storage Gateway addresses these on-premises scaling and maintenance issues by enabling you to seamlessly store your corporate file shares on Amazon S3, while keeping a copy of your frequently accessed files on-premises.
  • Data Mirroring
    If you want to leverage Amazon EC2's on-demand compute capacity for additional capacity during peak periods, for new projects, or as a more cost-effective way to run your normal workloads, you can use the AWS Storage Gateway to mirror your volume data to Amazon EC2 instances.

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