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Function Read-Integer([string]$Prompt) {
Do {
$InputOK = $False
$Input = Read-Host -Prompt $Prompt
$Input = $Input.Trim()
If ([string]::IsNullOrEmpty($Input)) {
Write-Host "Empty input is not allowed!" -ForegroundColor Red
Continue
}
$Integer = 0
If (-Not [uint64]::TryParse($Input, [ref]$Integer)) {
Write-Host "Input '$($Input)' is not a positive integer!" -ForegroundColor Red
Continue
}
If ($Integer -eq 0) {
Write-Host "Input '0' is not allowed!" -ForegroundColor Red
Continue
}
$InputOK = $True
} Until ($InputOK)
Return $Integer
}
$VMhost = HostSystem-host-8
$disks = Get-Datastore -VMHost (Get-VMHost -Id $VMHost)
$capacity = $disks.capacityMB
$freespace = $disks.FreeSpaceMB
if ($freespace -le ($capacity *0.15)) { # less than 15% available) }; else { #more than 15% available }
cls
Write-Host "*******************************************************************************"
Write-Host -ForegroundColor Green "CALCULATOR to calculate FREE SPACE PERCENTAGE after reclaiming storage space"
Write-Host "*******************************************************************************"
Write-Host ""
function CalcPercent {
param(
[parameter(Mandatory = $true)]
[int]$InputNum1,
[parameter(Mandatory = $true)]
[int]$InputNum2)
$InputNum1 / $InputNum2*100
}
$CapacityMB = Read-Host -Prompt 'Input Datastore CAPACITY in MB '
$A = [Math]::Round($CapacityMB)
$CurrentFreeSpaceMB = Read-Host -Prompt 'Input Datastore CURRENT FREE SPACE in MB '
$B = [Math]::Round($CurrentFreeSpaceMB)
$SpaceToReclaimMB = Read-Host -Prompt 'Input Space that you want to RECLAIM in MB '
$C = [Math]::Round($SpaceToReclaimMB)
$FreeSpaceMB = [float]$B-$C
$D = [Math]::Round($FreeSpaceMB)
$PercentFree = CalcPercent $D $A
$PercentFree = "{0:N2}" -f $PercentFree
$E = [Math]::Round($PercentFree)
Write-Host ""
Write-Host -ForegroundColor Yellow "Datastore Free Space will be $PercentFree % after reclaiming $SpaceToReclaimMB MB storage"
if ($E -lt 15)
{
Write-Host -BackgroundColor Red "Free space is less than 15%. You have to add additional storage before you reclaim $SpaceToReclaimMB MB."
}
else
{
Write-Host -ForegroundColor Green "YOU CAN GO AHEAD WITH RECLAIMING $SpaceToReclaimMB MB OF SPACE."
}
cls
Write-Host "*******************************************************************************"
Write-Host "CALCULATOR to calculate FREE SPACE PERCENTAGE after reclaiming storage space" -ForegroundColor Green
Write-Host "*******************************************************************************"
Write-Host ""
Function ConvertTo-Percent {
Param(
[parameter(Mandatory = $true)][Alias('Numerator')]
[int]$Antecedent,
[parameter(Mandatory = $true)][Alias('Denominator')]
[int]$Consequent,
[int]$DecimalPlaces = 0
)
Return [math]::Round((100 * $Antecedent) / $Consequent, $DecimalPlaces)
}
Function Read-Integer([string]$Prompt) {
Do {
$InputOK = $False
$Input = Read-Host -Prompt $Prompt
$Input = $Input.Trim()
If ([string]::IsNullOrEmpty($Input)) {
Write-Host "Empty input is not allowed!" -ForegroundColor Red
Continue
}
$Integer = 0
If (-Not [uint64]::TryParse($Input, [ref]$Integer)) {
Write-Host "Input '$($Input)' is not a positive integer!" -ForegroundColor Red
Continue
}
If ($Integer -eq 0) {
Write-Host "Input '0' is not allowed!" -ForegroundColor Red
Continue
}
$InputOK = $True
} Until ($InputOK)
Return $Integer
}
$CapacityMB = Read-Integer -Prompt 'Input Datastore CAPACITY in MB (no decimal places) '
$CurrentFreeSpaceMB = Read-Integer -Prompt 'Input Datastore CURRENT FREE SPACE in MB (no decimal places) '
$SpaceToReclaimMB = Read-Integer -Prompt 'Input Space that you want to RECLAIM in MB (no decimal places) '
$FreeSpaceMB = $CurrentFreeSpaceMB - $SpaceToReclaimMB
$PercentFree = ConvertTo-Percent $FreeSpaceMB $CapacityMB -DecimalPlaces 2
Write-Host ""
Write-Host -ForegroundColor Yellow "Datastore Free Space will be $PercentFree % after reclaiming $SpaceToReclaimMB MB storage"
if ($PercentFree -lt 15)
{
Write-Host -BackgroundColor Red "Free space is less than 15%. You have to add additional storage before you reclaim $SpaceToReclaimMB MB."
}
else
{
Write-Host -ForegroundColor Green "YOU CAN GO AHEAD WITH RECLAIMING $SpaceToReclaimMB MB OF SPACE."
}
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