You can use the vSAN cluster performance charts to monitor the workload in your cluster and determine the root cause of problems.

Before you begin

The vSAN performance service must be turned on before you can view performance charts.

About this task

When the performance service is turned on, the cluster summary displays an overview of vSAN performance statistics, including vSAN IOPS, throughput, and latency. At the cluster level, you can view detailed statistical charts for virtual machine consumption and the vSAN back end.

Procedure

  1. Navigate to the vSAN cluster in the vSphere Web Client Navigator.
  2. Click the Monitor tab and click Performance.
  3. Select vSAN - Virtual Machine Consumption. Select a time range for your query.

    vSAN displays performance charts for clients running on the cluster, including IOPS, throughput, latency, congestions, and outstanding I/Os. The statistics on these charts are aggregated from the hosts within the cluster.

  4. Select vSAN - Backend. Select a time range for your query.

    vSAN displays performance charts for the cluster back-end operations, including IOPS, throughput, latency, congestions, and outstanding I/Os. The statistics on these charts are aggregated from the hosts within the cluster.

  5. Select vSAN - iSCSI and select an iSCSI target or LUN. Select a time range for your query.
    Note:

    To view iSCSI performance charts, all hosts in the vSAN cluster must be running ESXi 6.6 or later.

    vSAN displays performance charts for iSCSI targets or LUNs, including IOPS, bandwidth, latency, and outstanding I/O.