Network drive - double deleting

danko

In the main NAS Starter Utility, I adding the NAS folders (video, photo, music...) as a network drive in Windows Explorer.
Problem is, when I try to delete some folders in network drive, when i click "delete" all files from folder are deleting but folder stay exist. Then I have to click "delete" again, afther that folder are deleted.
Sometimes, folders can be deleted normaly, one-step delete!
Why this happend? 
Is this problem about RAID, or what?

Dexter

After delete the file try to refresh the file pages, maybe the file has been deleted.

when the file still exist on the folder, you can try ssh login into device and check if the file really still exist on the device