AWS Storage Gateway

An AWS service that allows on-premise network to direct connect with AWS (via AWS Direct Connect) and store data on different services, s3 or glacier.

Generalities

• It is runs a VM that can run on a VMWare/Hypervisor
• Provides local storage backed by S3/Glacier
• Used by DR environments
• Used by Cloud Migrations

Types

• NFS (File Gateway)
  • Can be stored on S3 via NFS/SMB
  • Ownership, permissions and timestamps are preserved in s3 obj meta-data
  • Supports native objects functionality (lifecycle, cross-region replication, etc)
• iSCSI (volumes gateway, non flat, block-based storage): for Operating Systems, DB engines.
  • It is stored in AWS EBS
  • Backups are incremental, only changed blocks are captured
  • Stored volumes: This are backed up to S3 from on-prem to S3 as multi-part uploads (1Gb-16TB). No AWS EBS.
  • Cached volumes: Data is captured from on-premises to EBS and finally to S3 (1Gb-32TB).
• VTL (tape gateway): archiving and/or backup solution.

Modes

• File gateway
  • Stored in S3 via NFS or SMB
• Volume Gateway Stored Mode (Gateway-stored volumes)
  • iSCSI storage
  • Async replication from on-prem data to S3
• Volume Gateway Cached Mode
  • iSCSIS storage
  • Cached in AWS S3
• Tape Gateway
  • iSCSI interface
  • Tabe Library with exsting backup software (VTL)