Limitations of object storage

Last update: May 27 2025

Limitations of object storage

We recommend loading objects larger than 100 MB using segmented loading via the S3 API or Swift API.

Storage limits и container limits you set them yourself.

Limitations of storage entities⁠

Containers

Maximum number of containers in a project	2 000 *
Maximum number of containers with Virtual-Hosted addressing in a project	100 (within 2,000)
Maximum container name size	128 UTF-8 characters
Maximum size of the access policy	20 KB.
Maximum number of objects in a container	Not limited

* The first 1000 containers are displayed in the dashboard. If there are more containers, you can view the full list via API.

Objects

Maximum object size	50 TB.
Maximum object name size	1024 UTF-8 characters
Minimum size of data to be downloaded in one request	0 bytes
Maximum size of data to be downloaded per request	5 GB.
Minimum segment size for segmented loading	1 byte
Maximum number of segments for segmented loading	10 000

Headings

Maximum size of all headers/metadata per account/container/object in the request body	8 KB
Maximum size of all headers/metadata of the X-Account-Meta-$Name, X-Container-Meta-$Name, X-Object-Meta-$Name type.	4 KB
Maximum number of headers per account, container, or object	90
Maximum header name size	64 UTF-8 characters
Maximum number of characters in the title value	256 UTF-8 characters
Maximum total header size	320 UTF-8 characters (64 characters + 256 characters)

Limitations of API requests⁠

The limits are for a single container.If your load profile exceeds these limits, we recommend that you distribute the load across multiple containers at a rate of no more than 250 requests per second (RPS) per container.

If the limit is exceeded, the server will return a response with the code 429 Too Many Requests and the message Rate Limit exceeded.

S3 API

Type of requests	Limit (requests per second)	Message from the server
All inquiries	2 000	Too many authorized requests
GET + HEAD	1 000	Too many GET requests
POST	200	Too many POST requests
PUT	300	Too many PUT requests
DELETE	300	Too many DELETE requests

Swift API

Type of requests	Limit (requests per second)	Message from the server
All inquiries	2 000	Too many authorized requests
GET + HEAD	1 000	Too many GET requests
POST	300	Too many POST requests
PUT (without X-Copy-Form)	300	Too many PUT requests
PUT (with X-Copy-Form)	200	Too many PUT requests
COPY	200	Too many COPY requests
DELETE	300	Too many DELETE requests