S3 Standard Infrequent Access (S3 Standard-IA) – Parsing Logs and Events with AWS Native Tools – SCS-C02 Study Guide

S3 Standard Infrequent Access (S3 Standard-IA)

If you have data you don’t access frequently but still need to retrieve in real time, the S3 Standard-IA storage tier provides an excellent option. If you decide to use this storage tier, consider the following: the files and objects you would store in your S3 bucket would need to be at least 128 KB in size, or they will be charged for being that size at a minimum. Also, you need to keep the files in this storage tier for at least 30 days, so volatile files constantly being created and deleted would not be a good choice for storing in the S3 Standard-IA storage tier.

Key Points to Remember about S3 Standard-IA

• It is designed for files over 128 KB (smaller files will be charged at 128 KB size).
• It is designed for more extended storage periods of at least 30 days (minimum 30-day charge).
• There is a higher GET, PUT, COPY, POST, LIST, and SELECT charge than S3 Standard storage but lower storage cost, so it is designed for infrequent access, as the name suggests.
• Objects are available to access in real time with no delays.
• It is constructed for 99.99% availability and 99.999999999% durability during a given year, with copies stored in multiple Availability Zones.
• It can support SSL for data in transit and encryption at rest.

S3 One Zone Infrequent Access (S3 One Zone-IA)

S3 One Zone-IA has many of the features of Standard-IA but at a lower cost point. This is because the data is being stored in only one Availability Zone instead of the minimum of three Zones, as in the case of Standard-IA. This storage class is not a good option for critical data but can present considerable cost savings for infrequently accessed files and can be recreated if necessary.

Key Points to Remember about S3 One Zone-IA

• It is ideal for data that can be recreated or object replicas when setting cross-Region replication.
• It is designed for a more extended storage period of at least 30 days (minimum 30-day charge).
• Objects are available for real-time access.
• It is constructed for 99.5% availability and 99.999999999% durability during a given year.
• Data is subject to loss stemming from data center outages due to disasters such as floods or earthquakes.

S3 Glacier Instant Retrieval

When you have files and records that need to be archived in order to save costs but might still need instant access, then the S3 Glacier Instant Retrieval storage class fits your needs from both cost and access standpoints. Data stored in S3 Glacier Instant Retrieval can be accessed in milliseconds, the same time it takes to access an object in S3 Standard storage. Yet this storage class offers up to 68% cost savings over S3 Standard access. Furthermore, because data is stored across multiple Availability Zones, you don’t have to worry about durability or availability in order to achieve these cost savings.

Key points to remember about S3 Glacier Instant Retrieval:

• It allows for data retrieval with the same performance as S3 Standard, in milliseconds.
• It is designed for files over 128 KB (smaller files will be charged as if they were 128 KB in size).
• It is constructed for 99.9% availability and 99.999999999% durability during a given year.
• Any data stored in this tier is resilient to the destruction of up to one entire Availability Zone.