execute the code below after connecting to your VI server: change values as needed:

example:

C:\PS>Connect-VIServer -Server 10.23.112.235 -Protocol https -User Administrator
 -Password pass01

Get-VM | where {$_.name -like “*publ*”} | Select Name, VMHost, NumCpu, MemoryMB, `
@{N=”CPU Usage (Average), Mhz” ; E={[Math]::Round((($_ | Get-Stat -Stat cpu.usagemhz.average -Start (Get-Date).AddDays(-30) -IntervalMins 5 | Measure-Object Value -Average).Average),2)}}, `
@{N=”Memory Usage (Average), %” ; E={[Math]::Round((($_ | Get-Stat -Stat mem.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 5 | Measure-Object Value -Average).Average),2)}} , `
@{N=”Network Usage (Average), KBps” ; E={[Math]::Round((($_ | Get-Stat -Stat net.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 5 | Measure-Object Value -Average).Average),2)}} , `
@{N=”Disk Usage (Average), KBps” ; E={[Math]::Round((($_ | Get-Stat -Stat disk.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 5 | Measure-Object Value -Average).Average),2)}} |`
Export-Csv -Path d:\centrilogic\scripts\AverageUsage.csv

output: servername —left blank below intentionally.