The different Storage Classes in Amazon S3 are as below
S3- Standard
Amazon S3 Glacier Deep Archive
Amazon Glacier (Long-Term Storage)
Amazon S3 Standard Infrequent Access (IA)
Amazon S3 One-Zone IA
Amazon S3 Intelligent Tiering
Let's see them in a bit of detail below
Amazon S3 Standard
S3 standard offers high durability, availability, and performance object storage for frequently accessed data.
Durability is 99.9999999999%.
Designed for 99.99% availability over a given year.
Support SSL for Data in transit and encryption of data at rest.
The storage cost for the object is fairly high, but there is very less charge for accessing the object.
The largest object that can be uploaded in a single PUT is 5GB
Amazon S3 Standard Infrequent Access (IA)
S3-IA is for Data that is accessed less frequently but requires Rapid access when needed.
The storage cost is much cheaper than S3-Standard, almost half the price. But, you are charged more heavily for accessing your objects.
Durability is 99.9999999999%.
Resilient against events that impact an entire AZ.
Availability is 99.9%.
Support SSL for data in transit and encryption of data at rest.
Data that is deleted from S3-IA within 30 days will be charged for a full 30 Days.
Backed with the Amazon S3 Service Level Agreement for availability.
Amazon S3 Intelligent Tiering
The S3 Intelligent Tiering Storage class is designed to optimize cost by automatically moving data to the most cost-effective access tier.
It works by storing objects in 2 access tiers.
If an object in the infrequent access tier is accessed, it is automatically moved back to the frequent access tier.
There are no retrieval fees when using the S3-Intelligent tiering storage class and no additional tiering fee when objects are moved between access tiers.
Same low latency and high performance as S3-Standard.
Object less than 128KB can not move to Infrequent Access (IA).
Durability is 99.9999999999%.
Availability is 99.9%.
Amazon One-Zone IA
S3 One-Zone-IA is for data that is accessed less frequently but requires rapid access when needed.
Data stored in a single AZ.
Ideal for those, who want lower cost option for IA-Data
It is a good choice for storing secondary backup copies of on-premises data or easily recreateable data.
You can use S3 lifecycle policies.
Durability is 99.9999999999%.
Availability is 99.5%.
Because S3 one zone-IA stores data in a single AZ, data stored in this storage class will be lost in the event of AZ destruction.
Amazon S3 Glacier
S3 Glacier is a secure, durable, low-cost storage class for data archiving.
To keep costs low yet suitable for varying needs, S3 Glacier provides three retrieval options that range from a few minutes to hours.
You can upload objects directly to Glacier or use lifecycle policies.
Durability is 99.9999999999%.
Data is resilient in the event of one entire AZ destruction.
Support SSL for data in transit and encryption data at rest.
You can retrieve 10 GB of your Amazon S3 Glacier data per month for free with a free-tier account.
Amazon S3 Glacier Deep Archive
S3 Glacier deep archive is Amazon S3's cheapest storage
It is designed to retain data for longer periods e.g. 10 years.
All objects stored in S3-Glacier Deep Archive are replicated and stored across at least three geographically dispersed AZ.
Durability is 99.9999999999%.
Ideal alternative to magnetic tape libraries.
Retrieval time is within 12 hours.
Storage cost is up to 75% less than for the existing S3-Glacier Storage Class.
Availability is 99.9%.