The vRealize Operations Manager collects metrics and performs capacity trend analysis on a hybrid vSAN read cache. Read Cache metrics are not collected for a vSAN all-flash configuration.

Read cache metrics for the vSAN disk group include:

  • Read Cache|Hit Rate (%)
  • Read Cache|Miss Rate Ratio
  • Read Cache|Reads Per Second (IOPS)
  • Read Cache|Read Latency (ms)
  • Read Cache|Writes Per Second (IOPS)
  • Read Cache|Write Latency (ms)

The following read cache metrics are disabled by default:

  • Read Cache|Read I/O Count
  • Read Cache|Write I/O Count