An EC2 design needs persistent block storage, a file system shared by several instances, and a fast temporary area.
Match each requirement to AWS storage.
Choose THREE appropriate mappings.
EBS provides persistent block storage, EFS provides a shared file system, and Instance Store provides temporary local storage attached to an instance.
Detailed explanation
EBS is block storage generally scoped to one Availability Zone, not a cross-Region shared file system.
EBS is block storage generally scoped to one Availability Zone, not a cross-Region shared file system.
EFS provides a managed file system that multiple compute resources can use concurrently.
EFS provides a managed file system that multiple compute resources can use concurrently.
EBS provides persistent block volumes that can be attached to EC2 instances.
EBS provides persistent block volumes that can be attached to EC2 instances.
Instance Store is local temporary storage whose data can be lost when the instance or host is stopped or terminated.
Instance Store is local temporary storage whose data can be lost when the instance or host is stopped or terminated.
Check official documentation
Compare the following points with the official documentation.
Amazon EBS、Amazon EFS、EC2 Instance Storeの公式概要を確認する。
What to confirm
ストレージのアクセス方式と永続性からEBS・EFS・Instance Storeを選べる。
Key points
- Amazon EBS
- Amazon EFS
- EC2 Instance Store
- Storage persistence
Notes
- Environment: AWS公式ストレージ・EC2ドキュメントの確認
- Confirm current capabilities and terminology in the official AWS documentation.
Foundation review
Access unit
EBS exposes blocks, EFS exposes files, and Instance Store provides local paths on the host.
Durability decision
Temporary local storage can be useful for scratch data, while persistent data needs a durable service.