[Yandex Cloud documentation](../../index.md) > [Yandex Data Streams](../index.md) > [Concepts](index.md) > Quotas and limits

# Quotas and limits in Data Streams

Yandex Data Streams has the following limits:

* [_Quotas_](https://console.yandex.cloud/cloud?section=quotas) are organizational constraints that can be changed by contacting technical support.
* _Limits_ are technical constraints of the Yandex Cloud architecture. You cannot change the limits.

If you need more resources, you can increase your quotas in one of the following ways:

* [Make a request to increase your quotas](https://console.yandex.cloud/cloud?section=quotas).
* Contact [support](https://center.yandex.cloud/support) and specify which quotas you want increased and by how much.

To have your request processed, you must have the `quota-manager.requestOperator` [role](../../iam/roles-reference.md#quota-manager-requestoperator) or higher, e.g., `editor` or `admin`.

You can manage your quotas with [Cloud Quota Manager](../../quota-manager/quickstart.md).

#### Quotas {#yds-quotas}

#|
|| Type of limit | Value ||
|| Maximum number of data transmission streams | 10 ||
|| Maximum data retention period for a data stream| 24 hours ||
|#

#### Limits {#yds-limits}

Type of limit | Value
--- | ---
Maximum data write requests per second for a single data stream segment | 1,000 RPS
Maximum data write speed for a single segment | 1 MB/s
Maximum single-segment data read speed for all standard consumers | 2 MB/s
Maximum number of dedicated data consumers per data stream | 5 consumers
Number of shards in a YDB serverless database | 100