Local Network Backup with PowerShell

copy.ps1

# Define the variables

# The server or root directory
$localserver = "\\<localserver>"

# Share
$share = "\share"

# Source data folders you wish to backup
$dataFolders = @("\backups", "\pics") # You can add more folders to this array if needed

# Destination
$destinationRoot = ".\b1"

# Function to perform the robocopy
function PerformBackup($source, $destination) {
    robocopy $source $destination /MIR /Z /W:5 /R:5

    if ($? -eq $false) {
        Write-Host "Error occurred while copying $source" -ForegroundColor Red
    } else {
        Write-Host "$source copied successfully!" -ForegroundColor Green
    }
}

# Main script logic
foreach ($folder in $dataFolders) {
    $sourcePath = $localserver + $share + $folder
    $destinationPath = Join-Path -Path $destinationRoot -ChildPath $folder.TrimStart("\")
    
    PerformBackup -source $sourcePath -destination $destinationPath
}

Write-Host "Backup complete!" -ForegroundColor Cyan

Switch the robocopy command from \MIR to \E to prevent any deletion on the destination side, and still copy empty directories. Otherwise, this will perform a synchronization and delete anything that was removed from the source.