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docs: document storageGigabytes for managed postgres/redis addons #314

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20 changes: 18 additions & 2 deletions applications/configuration-as-code/addons-porter-yaml.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -83,18 +83,34 @@ addons:
config:
name: cache
masterUserPassword: password
allocatedStorage: 2 # Persistent storage size in GB. Cannot be changed after creation.
cpuCores: 0.1
ramMegabytes: 110
storageGigabytes: 2 # Persistent storage size in GB.
- name: db
type: MANAGED-POSTGRES
engine: POSTGRES
values:
config:
name: db
masterUserPassword: password
allocatedStorage: 2
cpuCores: 0.1
ramMegabytes: 110
storageGigabytes: 2
```

## Resource configuration

Managed Postgres and Redis addons accept the following resource fields under `values.config`:

| Field | Type | Description | UI range |
| :--- | :--- | :--- | :--- |
| `cpuCores` | number | CPU allocation for the addon (e.g. `0.1`, `0.5`, `1`). | Bounded by the cluster node size. |
| `ramMegabytes` | integer | Memory allocation in megabytes. | Bounded by the cluster node size. |
| `storageGigabytes` | integer | Persistent storage size in GB. | `1`–`100` GB. |

You can also edit these values from the **Resources** tab of the Postgres or Redis addon in the Porter dashboard, which exposes CPU, RAM, and Storage sliders.

<Info>
The dashboard sliders clamp `storageGigabytes` at **100 GB**. To allocate more, set the value directly in `porter.yaml` — values above 100 declared in YAML are preserved as-is and are not silently clamped.
</Info>