"expr": "rate(minio_node_io_rchar_bytes{job=~\"$scrape_jobs\"}[$__rate_interval])",
          "format": "time_series",
          "instant": false,
          "interval": "",
          "legendFormat": "Node RChar [{{server}}]",
          "refId": "A"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,