prometheus.NewDesc(
			prometheus.BuildFQName(minioNamespace, "capacity_raw_free", "total"),
			"Total free capacity online in the cluster",
			nil, nil),
		prometheus.GaugeValue,
		float64(GetTotalCapacityFree(server.Disks)),
	)

	sinfo := objLayer.StorageInfo(GlobalContext, true)

	// Report total usable capacity
	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(

			Value:       float64(GetTotalCapacity(storageInfo.Disks)),
		})

		metrics = append(metrics, MetricV2{
			Description: getClusterCapacityFreeBytesMD(),
			Value:       float64(GetTotalCapacityFree(storageInfo.Disks)),
		})

		metrics = append(metrics, MetricV2{
			Description: getClusterCapacityUsageBytesMD(),
			Value:       float64(GetTotalUsableCapacity(storageInfo.Disks, storageInfo)),
		})