4.3 New Architecture for Migrated Workloads
Storage Selection (Cheatsheet)
| Service | Protocol | OS Support | Use Case |
|---|---|---|---|
| EBS | Block (iSCSI-like) | Single EC2 (usually) | Boot volumes, Databases, High IOPS. |
| EFS | NFSv4 | Linux | Shared filesystem, Web content, CMS. Multi-AZ. |
| FSx for Windows | SMB | Windows | Shared Windows file shares, AD integration. |
| FSx for Lustre | Lustre | Linux | HDD/SSD |
| S3 | REST API | Any | Object storage, Static web, Data Lake. |
WARNING
Exam Gotcha: EFS is for Linux. FSx for Windows is for Windows. If the scenario asks for “POSIX compliant shared file system for Linux web servers”, choose EFS.
Compute Selection
EC2 vs. Containers vs. Serverless
- EC2: Max control. Legacy apps. OS tuning required.
- ECS/EKS (Fargate): Containerized apps. Less overhead than EC2.
- Lambda: Event-driven. Short running (max 15 mins). No server patches.
Migration Specifics
- VMware Cloud on AWS: Good for quick evacuation of data centers without changing IP addresses (L2 extension).