File Server Resource Manager
OS Veriosn >= Windows Server 2003 "R2"
The quota system can now be based on directories, rather than set by a Windows user.
Install
“Add or Remove Programs” -> “Add/Remove Windows Components”
-> “Management and Monitoring Tools” -> “Details” -> “File Server Resource Manager”
Usage
"Administrative Tools" -> "File Server Resource Manager"
"Create Quota Template"
CLI - dirquota.exe
Usage
dirquota quota add /path:e:\content\site /limit:500mb