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.
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. All data is securely transferred to AWS over SSL and stored encrypted in Amazon S3 using AES 256-bit encryption. Using Gateway-Cached volumes provides an attractive alternative to the traditional choice of maintaining and scaling costly storage hardware on-premises.
Disaster Recovery and Resilience
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. It requires investments in redundant infrastructure and staff across multiple datacenters and costly storage replication solutions.
Corporate File Sharing
Managing on-premises storage for departmental file shares and home directories typically results in high capital and maintenance costs, under-utilized hardware, and restrictive user quotas. 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.
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