1. 스토리지 클래스 개요

S3 스토리지 내 데이터 액세스 빈도에 따라 클래스를 선택해서 운용하는 것이 경제적이다.

Can move between classes manually or using S3 Lifecycle configurations

2. S3 내구성과 가용성

2-1) Durability

• High durability (99.999999999%. | | 9’s) of objects across multiple AZ
• If you store 10,000,000 objects with Amazon S3, you can on average expect to incur a loss of a single object once every 10,000 years
• Same for all storage classes

2-2) Availability

• Measures how readily available a service is
• Varies depending on storage class
• Example: S3 standard has 99.99% availability = not available 53 minutes a year

3. 클래스 종류

3-1) Amazon S3 Standard - General Purpose