Home ยป AWS Storage Classes

AWS Storage Classes

by

AWS Storage Classes

AWS Storage Classes

  • S3 storage classes are used to assist the concurrent loss of data in one or two facilities.
  • S3 storage classes maintain the integrity of the data using checksums.
  • S3 provides lifecycle management for the automatic migration of objects for cost savings.

S3 contains four types of storage classes:

  • S3 Standard
  • S3 Standard IA
  • S3 one zone-infrequent access
  • S3 Glacier

S3 Standard

  • Standard storage class stores the data redundantly across multiple devices in multiple facilities.
  • It is designed to sustain the loss of 2 facilities concurrently.
  • Standard is a default storage class if none of the storage class is specified during upload.
  • It provides low latency and high throughput performance.
  • It designed for 99.99% availability and 99.999999999% durability

S3 Standard IA

  • IA stands for infrequently accessed.
  • Standard IA storage class is used when data is accessed less frequently but requires rapid access when needed.
  • 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.
  • It is mainly used for larger objects greater than 128 KB kept for atleast 30 days.
  • It provides low latency and high throughput performance.
  • It designed for 99.99% availability and 99.999999999% durability

S3 one zone-infrequent access

  • S3 one zone-infrequent access storage class is used when data is accessed less frequently but requires rapid access when needed.
  • It stores the data in a single availability zone while other storage classes store the data in a minimum of three availability zones. Due to this reason, its cost is 20% less than Standard IA storage class.
  • It is an optimal choice for the less frequently accessed data but does not require the availability of Standard or Standard IA storage class.
  • It is a good choice for storing the backup data.
  • It is cost-effective storage which is replicated from other AWS region using S3 Cross Region replication.
  • It has the same durability, high performance, and low latency, with a low storage price and low retrieval fee.
  • It designed for 99.5% availability and 99.999999999% durability of objects in a single availability zone.
  • It provides lifecycle management for the automatic migration of objects to other S3 storage classes.
  • The data can be lost at the time of the destruction of an availability zone as it stores the data in a single availability zone.

S3 Glacier

  • S3 Glacier storage class is the cheapest storage class, but it can be used for archive only.
  • You can store any amount of data at a lower cost than other storage classes.
  • S3 Glacier provides three types of models:
    • Expedited: In this model, data is stored for a few minutes, and it has a very higher fee.
    • Standard: The retrieval time of the standard model is 3 to 5 hours.
    • Bulk: The retrieval time of the bulk model is 5 to 12 hours.
  • You can upload the objects directly to the S3 Glacier.
  • It is designed for 99.999999999% durability of objects across multiple availability zones.

Performance across the Storage classes

S3 StandardS3 Standard IAS3 One Zone-IAS3 Glacier
Designed for durability99.99999999%99.99999999%99.99999999%99.99999999%
Designed for availability99.99%99.9%99.5%N/A
Availability SLA99.9%99%99%N/A
Availability zones>=3>=31>=3
Minimum capacity charge per objectN/A128KB128KB40KB
Minimum storage duration chargeN/A30 days30 days90 days
Retrieval feeN/Aper GB retrievedper GB retrievedper GB retrieved
First byte latencymillisecondsmillisecondsmillisecondsSelect minutes or hours
Storage typeObjectObjectObjectObject
Lifecycle transitionsYesYesYesYes

Next TopicAWS Versioning

You may also like