Drive (D:\), where are EV Stores, is restricted for system vault user

Sometimes(i gues, after shutdown) drive, where EV Stores and their partition are placed, don't accessed for vault user. rights are redused. only local administrators has access in secutity tab in option of drive(D:\).

In spite of vault account is member of local administrator group, it can't access to drive. after i manually set rights in security tab for vault account - it has access to files on drive.

this is important for me, because i use file "IgnoreArchiveBitTrigger.txt" to alarm that backup of store drive is successfull. new file "IgnoreArchiveBitTrigger.txt" didn't make and day after shortcuts didn't make.

Why system lose access right for this drive? What can i do?