Real time disk IOPS and latency monitoring using PowerShell

The below code collects disk IOPS and average IO latency of a list of servers and output the real time values.

Note: Here we are monitoring only logical disk E of testvm-01, testvm-02 and testvm-03

while($true)
{

$Servers = "testvm-01","testvm-02","testvm-03"

$R_io = '\LogicalDisk(E:)\Disk Reads/sec'
$W_io = '\LogicalDisk(E:)\Disk Writes/sec'
$Lat = '\LogicalDisk(E:)\Avg. Disk sec/Transfer'

$Reads =  (Get-Counter -Counter $R_io -ComputerName $Servers).CounterSamples.CookedValue
$Writes = (Get-Counter -Counter $W_io -ComputerName $Servers).CounterSamples.CookedValue
$Latency = (Get-Counter -Counter $Lat -ComputerName $Servers).CounterSamples.CookedValue

clear

"{0,-15} {1,-15} {2,-15} {3,-15} {4, -15}" -f "Host", "Reads/Sec", "Writes/Sec", "Total IOPS", "Avg Latency (ms)"

echo `n

for($i=0; $i -le 2; $i+=1){

[int]$R = $Reads[$i]
[int]$W = $Writes[$i]
[int]$T = $R+$W
[int]$L = ($Latency[$i])*1000
[String]$N = $Servers[$i]

"{0,-15} {1,-15} {2,-15} {3,-15} {4,-15}" -f "$N", "$R", "$W", "$T", "$L"

}

}