How to map the Server.MapPath to a directory on a local machine or a server?

Question

I program in C# that uploads the file contents to a directory within the website folder.The Server.MapPath method stores the file to the folder Upload which is a part of the website. If there is a server can I upload the files there by giving the IP and the location such as "137.2.42.244/Documents". The server OS is a Solaris.

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace FileUpLoadMVC.Controllers
{
    public class FileUploadController : Controller
    {
        // GET: FileUpload
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public void UploadFiles()
        {
            if (Request.Files?.Count > 0)
            {
                var filesCount = Request.Files.Count;
                for (int i = 0; i < filesCount; i++)
                {
                    var file = Request.Files[i];
                    var fileName = Path.GetFileName(file.FileName);
                    var path = Path.Combine(Server.MapPath("~/Upload"), fileName);

                    file.SaveAs(path);
                }
            }
        }
    }
}