S3 Storage Classes in AWS

Solutions Architect

S3 Standard – this class offers:

  • Durability of 99.999999999% across multiple AZs – three minimum
  • Low latency
  • Resilient in the event of entire AZ destruction
  • 99.99% availability
  • An SLA governing performance
  • Encryption of transit and rest data
  • Lifecycle management

S3 Standard-Infrequent Access – this class offers:

  • Many of the S3 Standard features such as incredible durability
  • Designed for less frequent access, but still provides for responsiveness
  • This class is ideal for workloads like backups
  • You can actually set this class at the object level in a bucket that contains S3 Standard class objects
  • Note that this class reduces availability slightly at 99.9%

S3 One Zone-Infrequent Access – this class offers:

  • This might be an ideal class for objects like secondary backup copies of data
  • The objects in this storage class could be replicated to another region should the need arise to increase the availability
  • As you would guess, availability here is reduced slightly to 99.5%
  • There is a risk of data loss in the event of an AZs destruction

S3 Glacier – this class offers:

  • An ideal storage class for the archiving of data
  • Access times to archived data can be from minutes to hours depending on your configuration and purchase plan

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