To check the performance of a VMware vSAN using PowerShell, you can utilize the PowerCLI module to retrieve relevant performance metrics. Here’s an example script:

powershell
# Connect to vCenter Server
Connect-VIServer -Server <vCenterServer> -User <username> -Password <password>

# Specify the vSAN cluster name
$clusterName = "vSANCluster"

# Get the vSAN cluster object
$cluster = Get-Cluster -Name $clusterName

# Get the vSAN performance statistics for the cluster
$performanceStats = Get-Stat -Entity $cluster -Stat "vsan.*" -Realtime

# Loop through each performance stat and display the values
foreach ($stat in $performanceStats) {
    $statName = $stat.MetricId.Replace("vsan.", "")
    $statValue = $stat.Value
    $statUnit = $stat.Unit
    Write-Host "$statName: $statValue $statUnit"
}

# Disconnect from vCenter Server
Disconnect-VIServer -Server <vCenterServer> -Confirm:$false

Make sure to replace “, “, and “ with your actual vCenter Server details. Also, update “ with the name of your vSAN cluster. This script connects to the vCenter Server, retrieves the vSAN cluster object, and then fetches real-time performance statistics using the `Get-Stat` cmdlet. It loops through each performance stat, extracts the metric name, value, and unit, and displays them on the console. Please note that the PowerCLI module must be installed and properly configured for this script to work. Additionally, you may need to adjust the `Get-Stat` cmdlet parameters to retrieve specific vSAN performance metrics based on your requirements.