The disclosure herein describes managing a rate of processing unmap requests for a data storage volume. Unmap requests are received from a cluster of active hosts that are associated with the data storage volume. Latency data values of each active host are then accessed. A long-term cluster latency average value is calculated based on the accessed latency data values of all active hosts over a long-term time period and a short-term cluster latency average value is calculated based on the accessed latency data values of all active hosts over a short-term time period. An unmap rate adjustment value is calculated based on a difference between the long-term cluster latency average value and the short-term cluster latency average value. The rate of processing unmap requests for the data storage volume is adjusted based on the unmap rate adjustment value and the unmap requests are performed based on the adjusted rate.