SQL 2014 changed my NTFS permission - default backup directory setup

Question

Hello everybody.
Today I realize that new SQL 2014 changed my existing folder permissions (NTFS). This folder was shared for domain users and had set NTFS permissions for domain users and local administrators.
In setup of SQL I set backup directory to this shared folder and continued with setup. After finisting setup I realize that this folder is not accesible via network. Finally I realized that setup changed permissions - it added his MSSQL$INSTANCENAME account
into Security Tab and added all permissions to it. Other permissions was erased!
What the hell MS is wrong with you?
I must retake ownership to this folder and subfolder to fix it.
This is not funny and I think it is a BUG! I think that older SQL servers do not have begavior like this new one 2014.
Maybe it will be helpfully for somebody.
Maybe Microsoft found his lost saying - This is NOT a BUG, it is a FEATURE!
Have a nice day and keep calm.
Jarda Nechvatal

Answer 1

it added his MSSQL$INSTANCENAME account into Security Tab and added all permissions to it.
Other permissions was erased!
Hello Jarda,
That's nothing new and you have this behaviour in all SQL Server Versions; the SQL Server Service account is the owner of all subfolders of the Installation, even because the account needs permissions to read+write to those folders. So it is not a bug, it's
by design and if you need different permissions on those folders then you have to define them manually.
Olaf Helper
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