Introduction :
> S3 Availability, Durability and Data Replication
> Storage Classes after the completion of the module we will able to :
> Use the S3 for the storage of your data.
> Create an S3 bucket.
> You can store the data based on their access and uses pattern to the different6 storage classes.
Overview of Amazon S3
What is S3?
> S3 stands for Simple Storage Service.
> It allows you to store , retrieve, access, and back-up any amount of data at any time, from anywhere over the Internet.
> We can access S3 from AWS Management Console, AWS CLI, and AWS SDK.
** S3 Bucket Folder :
> Folders are used to group and organize files.
> S3 doesn't use hierarchy to organize files.
** S3 object :
1) Object can be your file, document, image, video, etc.
characteristics :
> The maximum object size that you can upload to S3 is 5 terabytes.
> S3 object versioning: keeping multiple variants of a single object.
> S3 storage class
> Bucket Policy and object ACL (Access Control List)
S3 Availability, Durability, and Data Replication
** Availability :
> It refers to the system uptime.
> How long the system is operational and able to deliver data upon request.
** Durability :
> It refers to long-term data protection.
> Data should not be lost or corrupted for the long run.
** S3 Data Replication :
> S3 is designed to provide 99.99999% durability and 99.99% availability of your objects over a given year.
Storage classes :
> It is general storage class used for frequently accessed data.
> It offers high durability, availability, and performance.
> S3 is designed for 99.999 availability and 99.999999% durability.
> It gives you low latency and high throughput.
S3 standard use case :
1) Cloud applications 2) Dynamic websites 3) Content distribution
4) Mobile & gaming applications 5) Big data analytics
S3 standard infrequent access :
> Infrequent Access storage class is used for less frequently accessed data.
> S3 Infrequent Access storage class is designed for three nine(99.9%) availability and eleven nine(99.999999999%) durability.
> We pay for the per GB retrieval charge.
S3 Standard Infrequent Access :
> This is a low-cost and high-performance storage class, ideal for long-term storage class,ideal for long-term storage, backups, and disaster recovery.
> Our data is also resilient against any events of an entire availability zone failure.
One Zone-Infrequent Access(S3 One Zone-IA) :
> Data is stored in a single availability.
> We still have low latency and high throughput performance.
> As the data is stored in one availability zone, it is 20% cheaper than Infrequent Access.
> S3 One Zone-IA is ideal for those who need a lower-cost option for frequently accessed data but not need the availability and resilience of S3 Standard or S3 Standard-IA.
> This is a good option for storing secondary backup copies of on-premises data or data that can easily be created again.
Amazon S3 Intelligent-Tiering(S3 Intelligent-Tiering) :
> This storage class comes with an inbuilt intelligence.
> Objects will be moving automatically from one storage class to another storage class based on their access pattern.
> This is a highly cost-optimized storage class.
> It is also designed for eleven nine (99.9999999999%) durability and three nine(99.9%) availability.
> You must pay a small monthly monitoring and auto-tiering charge.
Glacier :
> Amazon S3 Glacier is the cheapest storage class in S3 and supports long-term retention and digital preservation for data accessed only once or twice per year.
> It is helpful for Customers, particularly those in highly-regulated industries.
> It is designed for 11 nine(99.999999999%)durability of objects across multiple Availability Zones.
3 type of glacier
A) S3 Glacier Instant Retrieval : It gives a data retrieval time of milliseconds, with the same performance as S3 Standard.
B) Glacier Flexible Retrieval : Data retrieval time can be configured fom minutes to hours.
It is best suited for backup and disaster recovery scenarios.
C) S3 Glacier Deep Archive : S3 Glacier Deep Archive offers data retrieval time within 12 hours.
It's an ideal alternative to magnetic tape libraries.
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