Do the following before you install the Backup Exec Storage Provisioning Option:
Ensure that Virtual Disk Service (VDS) 1.1 is installed on the media server.
VDS 1.1 is installed with Windows Server 2003 Service Pack 2 and Windows Server 2008. To install VDS 1.1 on Windows Server 2003 R2, install Service Pack 2 or the Microsoft Storage Manager for SANs management tool.
Install the storage array vendor’s VDS hardware provider on the media server.
How to choose the location for CASO device and media data
Requirements for the Storage Provisioning Option in a CASO environment
About installing the Storage Provisioning Option