DEVELOPyo

[ S3 Storage Classes ]

1. Amazon S3 Standard (General Purpose)

 - High durability of objects across multiple AZs

 - Sustain 2 concurrent facility failures

 - eg. Big Data analytics, mobile&gaming applications, content distribution

2. Amazon S3 Intelligent Tiering

저지연, 고성능, 모니터링 비용 부과

 - High durability of objects across multiple AZs

 - Same low latency and high throughput performance of S3 Standard

 - Small monthly monitoring and auto-tiering fee

 - Automatically moves objects between two access tiers based on changing access patterns

 - Resilient against events that impact an entire AZ

3. Amazon S3 Standard-IA (Infrequent Access)

자주 접근하지 않는 데이터에 적합, 고성능, 저렴

 - High durability of objects across multiple AZs

 - Suitable for data that is less frequently accessed, but requires rapid access when needed

 - Low cost compared to Amazon S3 Standard

 - Sustain 2 concurrent facility failures

 - eg. As a data store for DR, backups

4. Amazon S3 One Zone-IA (Infrequent Access)

Standard-IA 보다 고성능, 더 저렴, 단일 AZ로 DR 불가

 - Same as IA but data is stored in a single AZ

 - data lost when AZ is destroyed

 - Low latency and high throughput performance

 - Supports SSL for data at transit and encryption at rest

 - Low cost compared to IA (20%)

 - eg. Storing secondary backup copies of on-premise data, or storing data you can recreate (thumnail)

5. Amazon Glacier

저장직후 단시간동안 접근이 불가하며 오래동안 데이터를 보관하기 용이, 저렴, 마그네틱 저장소의 대체재

 - Low cost object storage meant for archiving/backup

 - Data is retained for the longer term

 - Alternative on-premise magnetic tape storage

 - Cost per storage per month + retrieval cost

 - Each item in Glacier is called "Archive" (not object)

 - Archives are stored in "Vaults" (not bucket)

 - 3 retrieval options :

   1) Expedited (1 to 5 minutes)

   2) Standard (3 to 5 hours)

   3) Bulk (5 to 12 hours)

   * Minimum storage duration of 90 days

6. Amazon Glacier Deep Archive

Amazon Glacier 보다 더 저렴, 저장직후 더오랜 시간 접근이 불가

 - Amazon Glacier Deep Archive - for long term storage - cheaper :

  1) Standard (12hours)

  2) Bulk (48hours)

  * Minimum storage duration of 180 days

7. Amazon S3 Reduced Redundancy Storage (deprecated/omitted)

# Moving between storage classes

- You can transition objects between storage classes

- For infrequently accessed object, move them to STANDARD_IA

- For archive objects you don't need in real-time, GLACIER or DEEP_ARCHIVE

- Moving objects can be automated using a lifecycle configuration

[ S3 Lifecycle Rules ]

- Transition actions : It defines when objects are transitioned to another storage class

  1) Move objects to Standard IA class 60 days after creation

  2) Move to Clacier for archiving after 6 months

- Expiration actions: configure objects to expire (delete) after some time

  1) Access log files can be set to delete after a 365 days

  2) Can be used to delete old versions of files (if versioning is enabled)

  3) Can be used to delete incomplete multi-part uploads

- Rules can be created for a certain prefix (ex: s3://mybucket/mp3/*)

- Rules can be created for certain objects tags (ex: Department: Finance)