meta[xhttp.AmzTagDirective] = "REPLACE"

	if sc == "" {
		sc = oi.StorageClass
	}
	// drop non standard storage classes for tiering from replication
	if sc != "" && (sc == storageclass.RRS || sc == storageclass.STANDARD) {
		meta[xhttp.AmzStorageClass] = sc
	}

	meta[xhttp.MinIOSourceETag] = oi.ETag
	meta[xhttp.MinIOSourceMTime] = oi.ModTime.UTC().Format(time.RFC3339Nano)

		Type:      gaugeMetric,
	}
}

func getNodeRRSParityMD() MetricDescription {
	return MetricDescription{
		Namespace: nodeMetricNamespace,
		Subsystem: storageClassSubsystem,
		Name:      "rrs_parity",
		Help:      "reduced redundancy storage class parity",
		Type:      gaugeMetric,
	}
}

func getNodeDrivesFreeInodesMD() MetricDescription {
	return MetricDescription{