# VolumeUpdate

> The VolumeUpdate object in the Guv API.

## Fields

| Field | Type | Description |
| --- | --- | --- |
| `size_gb` | integer | Grow only. |
| `ha` | boolean |  |
| `service` | string or null |  |
| `mount_path` | string or null |  |

\* always present

## Example

```json
{
  "size_gb": 1,
  "ha": false,
  "service": "string",
  "mount_path": "string"
}
```

## Used by

- [Grow, change HA, or attach to a service](/docs/api/volumes/#grow-change-ha-or-attach-to-a-service)