we use ServiceDesk in our domain ,we are scheduling backup over the network to a UNC path

what domain account do I need to give permissions to.it says here

http://www.manageengine.com/products/service-desk/faq-general-modules.html#BackupRestore4

 

NOTE: Please provide full access rights to the folder where you want to copy the backup.

 

gave full Share and NTFS permission to :

1-service account running the ManageEngine ServiceDesk Plus full control .didn't work

2-the computer account of the server running ManageEngine ServiceDesk Plus full control .didn't work

3- everyone full control .worked