Grafana shows only 15 days of metrics instead of 90 days

Grafana Configuration
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I’m using Grafana to visualize CPU, memory, and disk metrics from Prometheus using Node Exporter as the data source. However, I noticed that my Grafana dashboard only displays historical data for the past 15 days, even though I’ve already configured the data retention period to 90 days in Prometheus.

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Could you please help me understand what might be causing this issue?
Is there a way to verify or troubleshoot whether the data retention settings are actually applied, or if old data is being deleted due to storage limits or other configurations?

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Welcome @feetee00500 to the Grafana forum.

Which version of Grafana are you using (Cloud or OSS)? If Cloud, are you on a paid tier? The free tier’s storage of Metrics is limited to 14 days, regardless of what your Prometheus settings are.