Faster file move method other than File.Move

Question

I have a console application that is going to take about 625 days to complete. Unless there is a way to make it faster.

First off I am working in a directory that has a

Answer 1

You can move files in parallel and also using Directory.EnumerateFiles gives you a lazy loaded list of files (of-course I have not tested it with 4,000,000 files):

var numberOfConcurrentMoves = 2;
var moves = new List();
var sourceDirectory = "source-directory";
var destinationDirectory = "destination-directory";

foreach (var filePath in Directory.EnumerateFiles(sourceDirectory))
{
    var move = new Task(() =>
    {
        File.Move(filePath, Path.Combine(destinationDirectory, Path.GetFileName(filePath)));

        //UPDATE DB
    }, TaskCreationOptions.PreferFairness);
    move.Start();

    moves.Add(move);

    if (moves.Count >= numberOfConcurrentMoves)
    {
        Task.WaitAll(moves.ToArray());
        moves.Clear();
    }
}

Task.WaitAll(moves.ToArray());