disksInfo := getDisksInfo(disks, endpoints, metrics)

	// Sort so that the first element is the smallest.
	sort.Slice(disksInfo, func(i, j int) bool {
		return disksInfo[i].TotalSpace < disksInfo[j].TotalSpace
	})

	storageInfo := StorageInfo{
		Disks: disksInfo,
	}

	storageInfo.Backend.Type = madmin.Erasure
	return storageInfo
}

	diskStats := make([]struct {
		AvailableSpace uint64
		TotalSpace     uint64
	}, len(z.serverPools))
	var totalCap, totalFree uint64
	for _, disk := range si.Disks {
		// Ignore invalid.
		if disk.PoolIndex < 0 || len(diskStats) <= disk.PoolIndex {
			// https://github.com/minio/minio/issues/16500
			continue
		}
		totalCap += disk.TotalSpace
		totalFree += disk.AvailableSpace

			prometheus.NewDesc(
				prometheus.BuildFQName(diskNamespace, "storage", "total"),
				"Total space on the drive",
				[]string{"disk"}, nil),
			prometheus.GaugeValue,
			float64(disk.TotalSpace),
			disk.DrivePath,
		)
	}
}

func metricsHandler() http.Handler {
	registry := prometheus.NewRegistry()

	logger.CriticalIf(GlobalContext, registry.Register(minioVersionInfo))