AWS: Storage Gateway

• Access data stored in AWS from on-premise machines.
• Services that you can use with Storage Gateway include S3, AWS Backup, EBS, and Tape Library.
• Glacier, Deep Archive, and Tape Archive cannot directly be used with Storage Gateway.
• Data is encrypted in transit.
• There are three sub-services: File Gateway, Volume Gateway, and Tape Gateway.
• Runs as an appliance on a VM or hardware appliance. HVs: ESXi, Hyper-V, KVM, or EC2.

File Gateway

• SMB or NFS.
• Allows for a local cache.
• Files are stored on S3.
• Available S3 storage classes are: Standard, Standard IA, and One Zone IA.

Volume Gateway

• Store the volumes of an on-prem server on AWS.

• ISCI facilitates the communication between the server/s and Volume Gateway.

• Two possible modes.

• Cached Volume Mode: there is an on-prem cache. The entire data set is stored in S3. Low latency.

• Stored Volume Mode: the entire data set is on-prem. Backed-up to S3 using EBS point-in-time snapshots. Async. Snapshots are compressed and incremental.

• Up to 32 volumes per Volume Gateway.

• In cached mode, each volume can be up to 32 TB. Maximum of 1 PB data per gateway.

• In stored mode, each volume can be up to 16 TB. Maximum of 512 TB data per gateway.

Tape Gateway

• A back-up server connects over ISCI to a Virtual Tape Library (Tape Gateway).
• Standard tape backup applications can be used on the back-up server.
• Data is initially stored as S3 Standard.
• Once ejected, data can be stored using Glacier or Deep Archive.
• Data at rest is encrypted server-side with SSE-S3.