Storage Service Comparison
AWS offers multiple storage services, each optimized for different use cases. This guide helps you choose the right storage service for your workload.
Storage Categories
Object Storage
Services:
- Amazon S3
- Amazon S3 Glacier
Characteristics:
- Unlimited scalability
- Object-based
- REST API access
- High durability
Block Storage
Services:
- Amazon EBS
Characteristics:
- Block-level storage
- Attached to EC2 instances
- Persistent
- Low latency
File Storage
Services:
- Amazon EFS
- Amazon FSx
Characteristics:
- File system interface
- Shared access
- NFS/SMB protocols
- Multiple instances
Service Comparison
Amazon S3
Best For:
- Object storage
- Backup and archive
- Static website hosting
- Data lakes
- Content distribution
Features:
- Unlimited storage
- 99.999999999% (11 9's) durability
- Multiple storage classes
- Versioning
- Lifecycle policies
- Encryption
Storage Classes:
- Standard: Frequently accessed
- Intelligent-Tiering: Unknown access patterns
- Standard-IA: Infrequently accessed
- One Zone-IA: Non-critical, infrequent
- Glacier Instant Retrieval: Archive with immediate access
- Glacier Flexible Retrieval: Archive with flexible retrieval
- Glacier Deep Archive: Long-term archive
Use Cases:
- Backup and archive
- Content storage
- Static website hosting
- Data lakes
- Application data storage
Amazon EBS
Best For:
- Boot volumes
- Database storage
- Application data
- Block-level storage needs
Features:
- Persistent block storage
- Attached to EC2 instances
- Multiple volume types
- Snapshots
- Encryption
- Multi-attach (io1/io2)
Volume Types:
- gp3: General purpose (recommended)
- io1/io2: Provisioned IOPS
- st1: Throughput optimized HDD
- sc1: Cold HDD
Use Cases:
- Boot volumes
- Database storage
- Application data
- High-performance workloads
Amazon EFS
Best For:
- Shared file storage
- Content repositories
- Application data
- Container storage
Features:
- Fully managed NFS
- Shared across instances
- Regional (multi-AZ)
- Auto-scaling
- Lifecycle management
Performance Modes:
- General Purpose: Low latency
- Max I/O: High throughput
Throughput Modes:
- Bursting: Scales with size
- Provisioned: Fixed throughput
Use Cases:
- Shared content
- Web serving
- Application development
- Container storage
- Home directories
Amazon FSx
Best For:
- Windows file shares
- High-performance computing
- Enterprise file systems
- Specific protocol needs
File System Types:
- FSx for Windows File Server: SMB, Active Directory
- FSx for Lustre: HPC, ML, high performance
- FSx for NetApp ONTAP: Enterprise features
- FSx for OpenZFS: Snapshots, clones
Use Cases:
- Windows applications
- High-performance computing
- Machine learning
- Enterprise workloads
Decision Matrix
Choose S3 When
- Need object storage
- Want unlimited scalability
- Need high durability
- Want cost-effective storage
- Need multiple storage classes
- Building data lakes
Choose EBS When
- Need block storage
- Attaching to EC2 instances
- Need low latency
- Want persistent storage
- Need high IOPS
- Database storage
Choose EFS When
- Need shared file system
- Multiple instances accessing same data
- Want NFS protocol
- Need regional access
- Want auto-scaling
- Container storage
Choose FSx When
- Need Windows file shares
- Want SMB protocol
- Need Active Directory integration
- High-performance computing
- Enterprise features
- Specific protocol requirements
Performance Comparison
Latency
- EBS: Lowest (block-level, local)
- EFS: Low (< 1ms for General Purpose)
- FSx: Low (depends on type)
- S3: Higher (object storage, network)
Throughput
- FSx Lustre: Highest (hundreds of GB/s)
- EBS io1/io2: High (up to 1,000 MB/s)
- EFS: High (up to 10 GB/s provisioned)
- S3: High (unlimited, depends on request rate)
IOPS
- EBS io2: Highest (up to 256,000 IOPS)
- EBS io1: High (up to 64,000 IOPS)
- EFS: Scales with size
- FSx: High (depends on type)
- S3: Not applicable (object storage)
Cost Comparison
Storage Costs (General)
- S3 Standard: ~$0.023/GB/month
- S3 Glacier: ~$0.004/GB/month
- EBS gp3: ~$0.08/GB/month
- EFS Standard: ~$0.30/GB/month
- FSx: Varies by type
Cost Optimization
S3:
- Use appropriate storage classes
- Implement lifecycle policies
- Use Intelligent-Tiering
- Compress objects
EBS:
- Use gp3 for most workloads
- Right-size volumes
- Delete unused snapshots
- Use st1/sc1 for sequential workloads
EFS:
- Use EFS IA for infrequent access
- Enable lifecycle management
- Use Bursting mode when possible
- Monitor and optimize
FSx:
- Right-size file systems
- Use appropriate type
- Delete unused backups
- Monitor usage
Scalability
S3
- Unlimited: No limits on storage
- Automatic: Scales automatically
- Global: Access from anywhere
- High Throughput: Handles millions of requests
EBS
- Per Volume: Up to 16 TB
- Per Instance: Up to 40 volumes, 300 TB total
- Manual: Must manually add volumes
- Elastic Volumes: Can resize without downtime
EFS
- Unlimited: Scales automatically
- Automatic: Grows and shrinks with data
- Regional: Access across AZs
- High Throughput: Up to 10 GB/s
FSx
- Type-Dependent: Varies by file system type
- Scaling: Depends on type
- Manual: May require manual scaling
- High Performance: Optimized for performance
Durability and Availability
Durability
- S3: 99.999999999% (11 9's)
- EBS: 99.8-99.9% (with snapshots)
- EFS: 99.999999999% (11 9's)
- FSx: Varies by type
Availability
- S3: 99.99% SLA
- EBS: Depends on instance and AZ
- EFS: 99.99% (Standard), 99.9% (IA)
- FSx: Varies by type and configuration
Access Patterns
S3
- REST API: HTTP/HTTPS
- Object-Based: Key-value access
- Global: Access from anywhere
- Versioning: Multiple versions
EBS
- Block-Level: Mounted as block device
- Instance-Specific: One instance at a time (except multi-attach)
- Low-Level: Direct block access
- OS Integration: Standard file systems
EFS
- NFS Protocol: Standard NFSv4.1
- Shared: Multiple instances simultaneously
- POSIX: Standard file system semantics
- Regional: Access across AZs
FSx
- Protocol-Specific: SMB, NFS, etc.
- Shared: Multiple instances
- Type-Dependent: Depends on file system type
- Enterprise: Advanced features
Backup and Recovery
S3
- Versioning: Multiple versions
- Lifecycle Policies: Automatic transitions
- Cross-Region Replication: Automatic replication
- No Backup Needed: Built-in durability
EBS
- Snapshots: Point-in-time backups
- Incremental: Only changed blocks
- Copyable: Across regions
- Shareable: With other accounts
EFS
- Backup Service: AWS Backup integration
- Manual Backups: Can create backups
- Lifecycle Management: Automatic optimization
- No Native Snapshots: Use backup service
FSx
- Automated Backups: Daily backups
- Manual Backups: On-demand
- Point-in-Time Recovery: Available
- Type-Dependent: Features vary by type
Security
Encryption
- All Services: Support encryption at rest
- All Services: Support encryption in transit
- KMS Integration: For key management
- VPC Isolation: Network isolation
Access Control
- S3: IAM, bucket policies, ACLs
- EBS: IAM, security groups
- EFS: IAM, security groups, POSIX permissions
- FSx: IAM, security groups, protocol-specific
Integration
EC2 Integration
- S3: Via API, CLI, SDK
- EBS: Direct attachment
- EFS: Mount as NFS
- FSx: Mount as file system
Other AWS Services
- S3: Integrates with most services
- EBS: EC2-specific
- EFS: EC2, ECS, Lambda
- FSx: EC2, ECS
Best Practices
- Choose Right Service: Match service to use case
- Use Appropriate Storage Classes: Optimize for cost
- Implement Lifecycle Policies: Automatic optimization
- Enable Encryption: Protect sensitive data
- Monitor Usage: Track storage and costs
- Right-Size: Match capacity to needs
- Implement Backups: Regular backup strategy
- Optimize Costs: Use appropriate storage types
Related Documentation
- Amazon S3 - S3 details
- Amazon EBS - EBS details
- Amazon EFS - EFS details
- Amazon FSx - FSx details