S3 limitations
Understand Amazon S3 limitations.
Important: These limitations should be used with caution as there are implications that
are related to your hardware selections. Always discuss these requirements with your IBM account
team.
- Maximum object size when using Amazon S3
- Individual Amazon S3 objects can range in size from a minimum of 0 B to a maximum of 5 TB. The
largest object that can be uploaded in a single
PUTis 5 GB. For objects larger than 100 MB, consider using the Multipart Upload capability. - Maximum metadata size when using Amazon S3
- There is no defined limit on the total size of user metadata that can be applied to an object, but a single HTTP request is limited to 16,000 bytes.
- The amount of data overhead IBM Storage cluster produces to store S3 objects and metadata
- The estimate is 200-300 bytes plus the length of the object name. Versioned objects use additional space proportional to the number of versions. Also, transient overhead is produced during multi-part upload and other transactional updates, but these overheads are recovered during garbage collection.
For more information, see S3 unsupported header fields.