Daily backup and cleanup for folders in PowerShell

backup.ps1

################################################
#
# SETTINGS
#
################################################

$foldersToBackup = @( 
    "D:\Apteco\Publish\holidays\private"
    "D:\Apteco\Publish\holidays\public"
)
$timestamp = [datetime]::Now.ToString("yyyyMMddHHmmss")		# timestamp for now
$logfile = "E:\Apteco\Log\backup_manual.log"              # path of the logfile
$maxAgeBeforeRemoval = 7                                  # maximum age for folder in days
$removeOldFilesAfterBackup = $true                        # remove folders older than x days?


################################################
#
# LOG
#
################################################

"$( [datetime]::Now.ToString("yyyyMMddHHmmss") )`t-------------------------------" >> $logfile


################################################
#
# BACKUP AND REMOVAL
#
################################################

$foldersToBackup | foreach {

    $source = $_    
    
    # mirror the files from D drive to E drive with the same path -> could be changed to another drive or path if wished
    $destination = $source -replace 'D:\\', 'E:\'
    
    # add a timestamp at the destination
    $destinationWithTimestamp = "$( $destination )\$( $timestamp )\"
    
    # make sure the source folder will not be created again
    $source = "$( $source )\*"

    # create the new backup folder  
    New-Item -Path $destinationWithTimestamp -ItemType Directory
    
    # log
   "$( [datetime]::Now.ToString("yyyyMMddHHmmss") )`tBackup of ""$( $source )"" to ""$( $destinationWithTimestamp )""" >> $logfile

    # Copy from source to destination
    Copy-Item -Path $source -Destination $destinationWithTimestamp -Force -Recurse

    # remove if needed and older than x days
    if ( $removeOldFilesAfterBackup ) {
    
       [array]( Get-ChildItem $destination -Attributes Directory ) | ForEach {
            
            $directoryToCheck = $_

            $age = [datetime]::Now - [datetime]::ParseExact($directoryToCheck.Name,"yyyyMMddHHmmss",$null)

            if ( $age.days -gt $maxAgeBeforeRemoval ) {
            
                "$( [datetime]::Now.ToString("yyyyMMddHHmmss") )`tRemoving ""$( $directoryToCheck.FullName )"" because it is ""$( $age.days )"" days old"  >> $logfile
                
                Remove-Item -Path $directoryToCheck.FullName -Recurse

            }
       }
    }
}