For package pre-stage in 2012

On dp take the check box as pre stage

From package right click create "prestage content file" to create the package
This will create the .pkgx file.
Get the file extractcontent.exe from bin/x64

Run the below command

extractcontent.exe /p:e:\path of .pkgx files /s

These two steps will distribute the package as pre-stage method

Setupwpf.exe /script

Configmgrautosave.ini

Script to check the drive space in the server against the threshold value and triggers an alert

Script to check Disk Space
#Purpose: Script to check the drive space in the server against the threshold value and triggers an alert
#powershell script for disk space monitoring

$computer = get-content -path .\list.txt #get-content env:computername; #Get the server name
$percentWarning = 50; # Store the percentage warning threshold
$disks = Get-WmiObject -ComputerName $computer -Class Win32_LogicalDisk -Filter "DriveType = 3";
$mailbody = "The following drive(s) have less than $percentWarning% free sapce in Server,Please cleanup: $computer`n`n";
$mailbody+="Drive`t`tTotalspace(GB)`t`t`Freespace(GB)`n ________________________________________________________________________ `n";
$drivedata="";
$emailsubject="$computer - Low Disk Space Alert!";

# Code to send email to the File Server Owners
function SendEmail([string]$msg)
{
 $SMTPClient = new-object System.Net.Mail.smtpClient;
 $SMTPClient.host = "smtp.Domain.com"
 $MailMessage = new-object System.Net.Mail.MailMessage;
 $MailMessage.Subject = $emailsubject;
 $MailMessage.Body = $msg;
 $MailMessage.From = "SCOMN_No_Reply@Domain.com";
 $MailMessage.To.add("ToJhon@Domain.com");
 $SMTPClient.Send($MailMessage);
}

#The following block performs the core functionality
foreach($disk in $disks)
{
 $deviceID = $disk.DeviceID;
 [float]$size = $disk.Size;
 [float]$freespace = $disk.FreeSpace;  
 $percentFree = [Math]::Round(($freespace / $size) * 100, 2);
 $sizeGB = [Math]::Round($size / 1073741824, 2);
 $freeSpaceGB = [Math]::Round($freespace / 1073741824, 2);  
 if($percentFree -lt $percentWarning)
 {
  $drivedata += "$deviceID`t`t $sizeGB`t`t`t$freeSpaceGB`n";
 }
}
#Email to be sent only if any drive has free space less than threshold value
if($drivedata.length -gt 0)
{
 $msg=$mailbody+$drivedata;
 SendEmail($msg);
}

Source:- http://www.sharepointdiary.com/2012/11/drive-space-monitoring-using-powershell.html