docs(cpt): add region storage info

Author: nerda-codes

pages/cockpit/faq.mdx

@@ -30,11 +30,29 @@ Scaleway data is the observability data (metrics and/or logs) that is natively c
 
 Custom data refers to any metrics, logs, or traces that you manually push to Cockpit. This can include data from applications hosted at Scaleway or any other platform.
 
+## Where does Cockpit store data?
+
+### Scaleway data
+
+Cockpit stores Scaleway data in the same region as the Scaleway resource that produces it:
+
+- Metrics and logs collected from a Scaleway resource are stored in that region’s data source as **Scaleway Metrics** or **Scaleway Logs**.
+
+- You cannot configure a different region for where this automatically collected data is stored.
+
+### Custom data
+
+In order for Cockpit to store you custom data, you must first create a custom data source in a region of your choice. The data you send will then be stored in that custom data source’s region and will not be replicated across other regions.
+
+Even though data is region-bound, your Cockpit Grafana instance can query and visualize data across all regions where you have data sources.
+
+If you are using Scaleway’s preconfigured dashboards in Grafana, make sure you have selected the region of the resource you want to monitor using the drop-down at the top of the dashboard. This filters the dashboards to only show data from the matching regional data-source.
+
 ## How am I billed for using Cockpit with my Scaleway data?
 
-Scaleway data is collected and available in Cockpit for free. 
+Scaleway data is collected and available in Cockpit for free.
 
-Retention is also free as long as it stays within the default period: 31 days for metrics and 7 days for logs. 
+Retention is also free as long as it stays within the default period: 31 days for metrics and 7 days for logs.
 You can [adjust the retention period](/cockpit/how-to/change-data-retention) from 1 day (for logs) or 31 days (for metrics) to 1 year. Refer to the [dedicated documentation](/cockpit/concepts/#retention) for more information on available retention periods. However, starting May 1, 2025, data stored beyond the default period will incur charges based on daily storage volume.
 
 ## How am I billed for using Cockpit with custom data?

pages/cockpit/reference-content/cockpit-limitations.mdx

@@ -17,6 +17,24 @@ categories:
 
 This page provides information about the capabilities and limits of Scaleway's Observability Cockpit.
 
+## Cockpit data storage information
+
+### Scaleway data
+
+Cockpit stores Scaleway data in the same region as the Scaleway resource that produces it:
+
+- Metrics and logs collected from a Scaleway resource are stored in that region’s data source as **Scaleway Metrics** or **Scaleway Logs**.
+
+- You cannot configure a different region for where this automatically collected data is stored.
+
+### Custom data
+
+In order for Cockpit to store you custom data, you must first create a custom data source in a region of your choice. The data you send will then be stored in that custom data source’s region and will not be replicated across other regions.
+
+Even though data is region-bound, your Cockpit Grafana instance can query and visualize data across all regions where you have data sources.
+
+If you are using Scaleway’s preconfigured dashboards in Grafana, make sure you have selected the region of the resource you want to monitor using the drop-down at the top of the dashboard. This filters the dashboards to only show data from the matching regional data-source.
+
 ## Retention period of your data
 
 Scaleway offers several retention periods, depending on your [data types](/cockpit/concepts/#data-types).