Measures reported by AWSAmazon24HrS3Test

Amazon Simple Storage Service is storage for the Internet. Amazon S3 has a simple web services interface that you can use to store and retrieve any amount of data, at any time, from anywhere on the web.

To upload data to the cloud, you first create a bucket in one of the AWS Regions. A bucket is a container for data stored in Amazon S3. Once a bucket is created, you can then upload any number of objects to the bucket. Objects are the fundamental entities stored in Amazon S3, and consist of object data and metadata. Every object is contained in a bucket. For example, if the object named photos/puppy.jpg is stored in the johnsmith bucket, then it is addressable using the URL http://johnsmith.s3.amazonaws.com/photos/puppy.jpg

Each object in Amazon S3 has a storage class associated with it. Amazon S3 offers the following storage classes for the objects that you store. You choose one depending on your use case scenario and performance access requirements.

• STANDARD - This storage class is ideal for performance-sensitive use cases and frequently accessed data. STANDARD is the default storage class; if you do not specify storage class at the time that you upload an object, Amazon S3 assumes the STANDARD storage class.

• STANDARD_IA - This storage class (IA, for infrequent access) is optimized for long-lived and less frequently accessed data. For example - backups and older data where frequency of access has diminished, but the use case still demands high performance. The STANDARD_IA objects are available for real-time access.

  The STANDARD_IA storage class is suitable for larger objects greater than 128 Kilobytes that you want to keep for at least 30 days. For example, bucket lifecycle configuration has minimum object size limit for Amazon S3 to transition objects. For more information, see Supported Transitions and Related Constraints.

• GLACIER - The GLACIER storage class is suitable for archiving data where data access is infrequent. Archived objects are not available for real-time access. You must first restore the objects before you can access them. For more information, see Restoring Archived Objects.

  You cannot specify GLACIER as the storage class at the time that you create an object. You create GLACIER objects by first uploading objects using STANDARD, RRS, or STANDARD_IA as the storage class. Then, you transition these objects to the GLACIER storage class using lifecycle management.

• REDUCED_REDUNDANCY - The Reduced Redundancy Storage (RRS) storage class is designed for noncritical, reproducible data stored at lower levels of redundancy than the STANDARD storage class.

To know how many buckets have been created in each region and how many objects are stored in each storage class by every bucket, use the AWSAmazon24HrS3Test test.

This test automatically discovers the buckets that have been created in every region and reports the total count and size of objects in each bucket. You can then use the detailed diagnosis of this test to know in which storage classes each bucket is currently storing objects, and the total size of objects in each class.

Outputs of the test : One set of results for each bucket in each AWS region.

First-level descriptor: AWS Region

Second-level descriptor: Bucket name

The measures made by this test are as follows: