Review the following prerequisites:
Ensure that your system hardware and software meets the requirements.
Set up SQL Server for use with Storage Foundation for Windows (SFW).
See Configuring SQL Server storage with Symantec Storage Foundation for Windows.
Ensure that the SQL Server VSS Writer service is started.
Ensure that you have disks with enough space to store the snapshot volumes. Each snapshot set requires the same amount of space as the original volumes.
The vxsnap commands must be invoked on a local system. On Windows Server 2008, all CLI commands must run in the command window in the "run as administrator" mode.