- ranges 7d (30 min step) and 30d (2 h step); Prometheus keeps 31d - rate() window is at least the step, so long views show averages instead of a 2-minute sample; "now" values still use a 2m window - overview returns used_down/used_up: increase() of the interface counters over the whole range - tiles merged: traffic (with volume for the period), devices, load