What is AWS Storage Class?

S3 storage classes are used to facilitate data failure in one or two facilities at the same time. S3 storage groups use checksums to protect the data integrity. S3 includes lifecycle management to automatically move objects and save on costs.

S3 comprises

There are four storage classes as given below:

1. S3 Standard
2. S3 Standard IA
3. S3 one zone-infrequent access
4. S3 Glacier

S3 Standard

Standard storage class stores the data in multiple facilities redundantly over multiple computers. It is constructed to withstand the simultaneous loss of 2 facilities. The default storage class is normal if none of the storage class is defined during upload. It provides low latency and high throughput performance.
It designed for 99.99% availability and 99.999999999% durability

S3 Standard IA

1. IA stands for infrequently accessed.
2. Standard IA storage class is used when data is accessed less frequently but requires rapid access when needed.
3. It has a lower fee than S3, but you will be charged for a retrieval fee.
   It is designed to sustain the loss of 2 facilities concurrently.
4. It is mainly used for larger objects greater than 128 KB kept for atleast 30 days.
5. It provides low latency and high throughput performance.
   It designed for 99.99% availability and 99.999999999% durability

S3 one inaccessible zone

1. S3 one zone-infrequent storage class of access is used when data is accessed less frequently but allows fast access when necessary.
2. It stores the data in a single region of availability while other storage classes store the data in at least three available areas. Because of this, the cost is 20 per cent lower than regular storage class IA.
3. It is an ideal option for the less frequently accessed data but does not require Basic or Optional IA storage class availability.
4. It is a good option for the backup data being processed.
   It is cost-effective storage which is replicated using replication of S3 Cross Region from other AWS region.

Glacier S3

1. S3 Glacier storage class is the cheapest storage class but can only be used for archiving purposes.
2. You can store any amount of data less expensively than other storage classes.

S3 Glacier comes with three models:
1. Expedited: Data is processed for a few minutes in this model, which has a much higher cost.
2. Regular: Standard model retrieval time is 3 to 5 hours.
3. Bulk: The bulk model has a processing time of 5 to 12 hours.
The artefacts can be inserted directly into the S3 Glacier.
It is optimized for the longevity of artefacts over multiple availability zones at 99.9999999999 per cent.