This is to build list of servers with valid hardware & software

check-servers.ps1

# Set default minimal RAM in Mb
$DefaultMinimalRAM = 512

# Set default minimal HDD in Gb
$DefaultMinimalHDD = 20

# Set function
function HardwareCheck {

# Set parameters
param(
    # Server name is mandatory
    [Parameter(Mandatory=$true)]
    [string[]]$ServerName,

    # RAM & HDD isn't mandatory
    [System.Int32]$RAMMinimum = $DefaultMinimalRAM,
    [System.Int32]$HDDMinimum = $DefaultMinimalHDD
)

# Write minimum of RAM & HDD to console
Write-Host `n"RAM Minimum = " $RAMMinimum "Mb" -ForegroundColor Blue -BackgroundColor Yellow
Write-Host "HDD Minimum = " $HDDMinimum "Gb" -ForegroundColor Blue -BackgroundColor Yellow `n

# Check RAM & HDD
$ValidRAMServers = @()
$ValidHDDServers = @()

$ServerName | foreach { 

    $RAM =  Get-WmiObject -Class Win32_ComputerSystem -ComputerName $_ `
    | Select-Object -ExpandProperty TotalPhysicalMemory

    $RAMInMb = $RAM/1Mb -as[int]

    $HDD = Get-WmiObject -Class Win32_LogicalDisk -ComputerName $_ `
    | Select-Object -ExpandProperty FreeSpace

    $HDDInGb = $HDD/1Gb -as[int]
        
    if ($RAMInMb -gt $RAMMinimum) {
        $ValidRAMServers += $_
    
    } else {
        Write-Host $_ "has not enought RAM" -ForegroundColor Yellow
    }

    if ($HDDInGb -gt $HDDMinimum) {
            $ValidHDDServers += $_
    } else {
        Write-Host $_ "has not enought HDD" -ForegroundColor Yellow
    }

}

Write-Host "Servers with valid RAM: " $ValidRAMServers
Write-Host "Servers with valid HDD: " $ValidHDDServers

$ValidHardwareServers = Compare-Object -ReferenceObject $ValidRAMServers -DifferenceObject $ValidHDDServers -IncludeEqual `
| Where-Object {$_.SideIndicator -eq "=="} | Select-Object -ExpandProperty InputObject

return $ValidHardwareServers
}

# Enter custom Minimal RAM value
Write-Host "Enter RAM Minimum in Megabytes (Integer value). Default value is" $DefaultMinimalRAM "Mb"
$MinimalRAM = Read-Host

# Enter custom Minimal HDD value
Write-Host "Enter HDD Minimum in Gigabytes (Integer value). Default value is" $DefaultMinimalHDD "Gb"
$MinimalHDD = Read-Host

# If bouth RAM & HDD introduced
if (($MinimalRAM -ne [string]::empty) -and ($MinimalHDD -ne [string]::empty)) {
$HardwareCheckResult = HardwareCheck -RAMMinimum $MinimalRAM -HDDMinimum $MinimalHDD
}

# If only RAM introduced
elseif (($MinimalRAM -ne [string]::empty) -and ($MinimalHDD -eq [string]::empty)) {
$HardwareCheckResult = HardwareCheck -RAMMinimum $MinimalRAM
} 

# If only HDD introduced
elseif (($MinimalRAM -eq [string]::empty) -and ($MinimalHDD -ne [string]::empty)) {
$HardwareCheckResult = HardwareCheck -HDDMinimum $MinimalHDD
}

# If nothing introduced
else {
$HardwareCheckResult = HardwareCheck
}

# Write hardware check results to console 
Write-Host "Servers with valid hardware:" $HardwareCheckResult -BackgroundColor DarkGreen

# Check .Net 3.5 & CryptSvc service
function SoftwareCheck {
$ValidSoftwareServers = @()
$FeatureName = "NET-Framework-Features" 
$ServiceName = "CryptSvc"
$HardwareCheckResult | foreach {

    if ( ((Get-WindowsFeature -Name $FeatureName -ComputerName $_).Installed -eq "True") `
    -and ((Get-Service -Name $ServiceName -ComputerName $_).Status -eq "Running") ) {
        $ValidSoftwareServers += $_
    } else {
        Write-Host "Software on" $_ "sucks" -ForegroundColor Yellow
    }

}
return $ValidSoftwareServers
}

$SoftwareCheckResult = SoftwareCheck

# Write software check results to console
Write-Host `n "Servers with valid software:" $SoftwareCheckResult -BackgroundColor DarkGreen

$SoftwareCheckResult | foreach {

$SitePath = "c$\inetpub"
$SourcesPath = "C:\site_content\wwwroot"

# Remove is just for testing
Remove-WindowsFeature -ComputerName $_ -Name Web-Server -Restart
#Remove-Item -Path \\$_\$SitePath\wwwroot -Force -Recurse -ErrorAction SilentlyContinue
sleep -Seconds 90

if ((Install-WindowsFeature -ComputerName $_ -Name Web-Server -IncludeAllSubFeature -Verbose -Restart).ExitCode -eq "Success") {
    # Copy code & run IE to check    

    Copy-Item -Path $SourcesPath -Destination \\$_\$SitePath -Recurse -Force
    Start iexplore http://$_
} else {
    Write-Host "Failure on server" $_ -ForegroundColor Yellow
}

}

# Variables cleanup
Remove-Variable -Name * -ErrorAction SilentlyContinue