Course Section Summary
This section covers all storage options available for EC2 instances: EBS, Snapshots, AMIs, Instance Store, and EFS.
Study Files
| # | Topic | File | Priority |
|---|---|---|---|
| 1 | EBS Overview | 01-EBS-Overview | 🔴 High |
| 2 | EBS Snapshots | 02-EBS-Snapshots | 🔴 High |
| 3 | AMI (Amazon Machine Image) | 03-AMI | 🔴 High |
| 4 | EC2 Instance Store | 04-EC2-Instance-Store | 🟡 Medium |
| 5 | EBS Volume Types | 05-EBS-Volume-Types | 🔴 High |
| 6 | EBS Encryption | 06-EBS-Encryption | 🔴 High |
| 7 | Amazon EFS | 07-Amazon-EFS | 🔴 High |
Key Exam Topics
Storage Comparison
| Feature | EBS | Instance Store | EFS |
|---|---|---|---|
| Type | Network drive | Local hardware | Network file system |
| Persistence | Persists independently | Ephemeral | Persists independently |
| AZ | Locked to one AZ | Locked to instance | Multi-AZ |
| Attach | One instance (multi-attach for io) | One instance | Hundreds of instances |
| OS | Any | Any | Linux only |
| Capacity | Provisioned | Fixed | Auto-scaling |
Quick Decision Tree
Need persistent block storage?
├── Yes → EBS
│ ├── Need >32K IOPS? → io1/io2 (Nitro)
│ ├── General workload? → gp3 (or gp2)
│ ├── Big data throughput? → st1
│ └── Archive/cold? → sc1
├── Need shared file system across AZs?
│ └── EFS (Linux only, pay-per-use)
└── Need highest possible IOPS (millions)?
└── EC2 Instance Store (ephemeral!)
Related Sections
- EC2 SAA Level - Networking, Placement Groups, Hibernate
- EC2 Fundamentals - Basic EC2 concepts
Check yourself
Quiz