> For the complete documentation index, see [llms.txt](https://docs.ionos.com/postgres-sdk-nodejs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/postgres-sdk-nodejs/models/patchclusterproperties.md).

# PatchClusterProperties

Properties of the payload to change a cluster.

## Properties

| Name                  | Type                                                                      | Description                                                                   | Notes                               |
| --------------------- | ------------------------------------------------------------------------- | ----------------------------------------------------------------------------- | ----------------------------------- |
| **cores**             | **number**                                                                | The number of CPU cores per instance.                                         | \[optional] \[default to undefined] |
| **ram**               | **number**                                                                | The amount of memory per instance in megabytes. Has to be a multiple of 1024. | \[optional] \[default to undefined] |
| **storageSize**       | **number**                                                                | The amount of storage per instance in megabytes.                              | \[optional] \[default to undefined] |
| **connections**       | [**Array\<Connection>**](/postgres-sdk-nodejs/models/connection.md)       |                                                                               | \[optional] \[default to undefined] |
| **displayName**       | **string**                                                                | The friendly name of your cluster.                                            | \[optional] \[default to undefined] |
| **maintenanceWindow** | [**MaintenanceWindow**](/postgres-sdk-nodejs/models/maintenancewindow.md) |                                                                               | \[optional] \[default to undefined] |
| **postgresVersion**   | **string**                                                                | The PostgreSQL version of your cluster.                                       | \[optional] \[default to undefined] |
| **instances**         | **number**                                                                | The total number of instances in the cluster (one master and n-1 standbys).   | \[optional] \[default to undefined] |