NTP

https://support.microsoft.com/ja-jp/kb/2842683/ja
http://www.atmarkit.co.jp/ait/articles/0508/12/news089.html


http://www.atmarkit.co.jp/ait/articles/1502/13/news147.html

https://social.technet.microsoft.com/Forums/windowsserver/ja-JP/94a68eb1-1ca0-47f7-b333-d8808e67ff07/robocopy?forum=winserver8