[Yandex Cloud documentation](../../index.md) > [Yandex Managed Service for Sharded PostgreSQL](../index.md) > [Concepts](index.md) > Quotas and limits

# Managed Service for Sharded PostgreSQL quotas and limits


Managed Service for Sharded PostgreSQL has the following limitations:

* [_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 {#mspqr-quotas}

#|
|| **Type of limit** | **Value** ||
|| Connection TTL | 12 hours ||
|| Number of clusters per cloud
`mdb.clusters.count` | 16 ||
|| Total number of CPU cores for all database hosts per cloud
`mdb.cpu.count` | 64 ||
|| Total virtual memory for all database hosts per cloud
`mdb.memory.size` | 512 GB ||
|| Total storage capacity for all clusters per cloud
`mdb.ssd.size` | 4,096 GB ||
|| Number of GPUs 
`mdb.gpu.count` | 0 ||
|#

#### Limits {#mspqr-limits}

For PostgreSQL cluster limits, see [this Managed Service for PostgreSQL guide](../../managed-postgresql/concepts/limits.md#mpg-limits).

#|
|| **Type of limit** | **Minimum value** | **Maximum value** ||
|| Host class | m3-c2-m16 (2 × [50%](../../compute/concepts/performance-levels.md) vCPU Intel Ice Lake, 16 GB RAM) | m4a-c80-m640 (80 vCPU AMD Zen 3, 640 GB RAM) ||
|| Number of shards per cluster | 1 | No limits ||
|| Number of `INFRA` hosts per cluster (standard sharding) | 1 | 7 ||
|| Number of `ROUTER` hosts per cluster (advanced sharding) | 1 | 100 ||
|| Number of `COORDINATOR` hosts per cluster (advanced sharding) | 1 | 3 ||
|| Local SSD storage size | 10 GB | 20 GB ||
|#