m.Set(erasureSetReadHealth, b2f(readHealthy), labels...)

		writeHealthy := true
		writeTolerance := float64(h.HealthyDrives + h.HealingDrives - h.WriteQuorum)
		if writeTolerance < 0 {
			writeHealthy = false
		}
		m.Set(erasureSetWriteTolerance, writeTolerance, labels...)
		m.Set(erasureSetWriteHealth, b2f(writeHealthy), labels...)
	}

	return nil