Amazon Storage Gateway Guide
Overview
Amazon Storage Gateway is a virtual machine solution that:
Can be run on-premises or on EC2
Provides local storage resources backed by S3 and Glacier
Enables data synchronization between on-premises and AWS cloud storage
Includes bandwidth throttling capabilities
Core Use Cases
Disaster Recovery
Using AWS as a "hot site"
Facilitating failover capabilities
Maintaining synchronized cloud backups
Cloud Migration
Gradual data synchronization to AWS
Enables phased transition to cloud resources
Reduces on-premises storage requirements over time
Gateway Modes
1. File Gateway
Current name: File Gateway
Exposes volumes as NFS or SMB shares
Compatible with various operating systems
Backend replication to S3
2. Volume Gateway Stored Mode
Old name: Gateway-stored volumes
Features:
iSCSI interface
Asynchronous replication to S3
Primary data stored on-premises
Background synchronization to cloud
3. Volume Gateway Cached Mode
Old name: Gateway-cached volumes
Features:
iSCSI interface
Primary data stored on S3
Local caching of recently accessed files
Reduced on-premises storage requirements
4. Tape Gateway
Old name: Gateway virtual tape library
Features:
iSCSI interface
Virtual media changer
Virtual tape library
Compatible with popular backup software
Check documentation for specific software compatibility
Implementation Example: Remote Office Scenario
Setup
Uses cached volume mode
Provides synchronized file experience
Suitable for offices with limited bandwidth
Benefits
Data stored on S3 with high durability (11 nines)
Local caching for frequently accessed data
Bandwidth throttling to prevent network saturation
Efficient remote office access to cloud storage
Migration Strategy Example
Start with Volume Gateway stored mode
Gradually synchronize data to S3
Switch to cached mode
Reduce on-premises storage
Complete transition to cloud storage as needed
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