Limitations

Maximum object size

5 GB

Maximum size of a single object. Larger files require multipart upload with segmentation and merging

Minimum object size

No limitations

While objects with a zero-byte body can be stored, there is metadata and object storage-specific overhead. As a result, the actual minimum storable object size, including overhead, is typically around 4 KB per object

Segment size for multipart uploads

Up to 5 GB

Recommended size for each segment in a multipart upload

Maximum number of containers per account

No limitations

There are no limits on the number of containers per account

Maximum objects per container

No limitations

While there are no limits on the number of objects in a container, keep in mind that once a container holds approximately 1 million objects, the operation speed for that container may gradually decrease, constrained by the database performance

Maximum object name length

1024 bytes

Maximum length of an object name

Maximum container name length

256 bytes

Maximum length of a container name

Api request limits (GET/PUT/POST/DELETE)

No limitations

Requests to Swift have no limitations, while requests to Keystone (authorization) are limited to approximately 12 RPS. The request capacity depends on the capabilities of the frontend servers, which vary by location (typically two servers)

Metadata size

8 KB

Combined size of all metadata for a single object

Metadata entries per object

90

There is a maximum of 90 metadata entries per object

HTTP header size

8 KB

Maximum total size of all HTTP headers in a request

Number of object versions

No limitations

There is no limit to the number of object versions

Container size

No limitations

There is no limit to the container size