Daily Site Backup Powershell

Add-PsSnapin Microsoft.SharePoint.Powershell –ErrorAction SilentlyContinue
try
{
    $today = (Get-Date -Format dd-MM-yyyy)
    $backupDirectory = "D:\Backup\DailySiteCollectionBackUp\$today"
  # Backup file Location
    $backupFile = "D:\Backup\DailySiteCollectionBackUp\$today\Backup.bak"
  # Log file location
    $logFile = "$backupDirectory\BackupLog.log"  
  # Address of the Site Collection to backup
    $Site = "http://globas:1060/"
  
# Location of the Backup Folder
    if (-not (Test-Path $backupDirectory))
    {
      [IO.Directory]::CreateDirectory($backupDirectory)
      #New-Item $logPath -type $backupDirectory
    }
 
# Get backup start date and time
    $backupStart = Get-Date -format "MM-dd-yyyy HH.mm.ss"
  
  # creates a log file  Start-Transcript -Path
    Start-Transcript -Path $logFile
    
# This will actually initiate the backup process.
      Write-Host  
      Write-Host  
      Write-Host "Backup starting at $backupStart for $Site "  
      Write-Host "******************************************"
     Backup-SPSite -Identity $Site -Path $backupFile -Force
     $backupComplete = Get-Date -format "MM-dd-yyyy HH.mm.ss"
      Write-Host  
      Write-Host  
      Write-Host "Backup Completed at $backupComplete for $Site "  
      Write-Host "******************************************"
 
Stop-Transcript
}
Catch
{
  $ErrorMessage = $_.Exception.Message
  write "$today BackUp Failed   $ErrorMessage  ">>$logFile
 
}