This chart displays the per-host disk read rates for a datastore. The chart displays information about the ten hosts with the highest values.

This chart is located in the Performance view of the datastore Performance tab.

Table 1. Data Counters

Chart Label


Read IOPs per Host

Number of disk read commands completed on each disk on the host, per second.

Read rate = blocks read per second × block size

  • Counter: numberReadAveraged

  • Stats Type: Rate

  • Unit: Number

  • Rollup Type: Average

  • Collection Level: 3