The vRealize Operations Manager collects the metrics you use to monitor the write buffer capacity of your vSAN disk groups.

A reasonably balanced system consumes a significant amount of write buffer. Before placing additional workload on the vSAN, check the write buffer metrics for the vSAN disk group.

  • Write Buffer|Capacity (bytes)

  • Write Buffer|Free (%)

  • Write Buffer|Usage (%)

  • Write Buffer|Used (byte)

  • Write Buffer|Reads Per Second (IOPS)

  • Write Buffer|Read Latency (ms)

  • Write Buffer|Writes Per Second (IOPS)

  • Write Buffer|Write Latency (ms)

The following write buffer metrics are disabled by default:

  • Write Buffer|Read I/O Count

  • Write Buffer|Write I/O Count