Set property devices to accomplish this action.
Applies to: Microsoft SQL Server 2005.
 
Problem Description.
 
A SQL Server user is trying to backup one of the databases on a SQL Server 
2005 instance, but he is receiving the following error message when the backup 
operation fails:
 
Backup failed for Server 'SRV-A300'. (Microsoft.SqlServer.Smo)
Set property Devices to accomplish this action. (Microsoft.SqlServer.Smo)
The destination of the backups is a local disk.
 
Cause.
Two possible causes we have identified for this error:
	- The user is not providing a file name for the backup file resulting of 
	the backup operation.
 
	- Please, verify the service account for the MSSQLSERVER service have 
	permissions over the physical file or folder on the hard drive that 
	corresponds to the logical backup device that is being used to make the 
	database backup. If you are using a job to do the backup, please verify the 
	permissions for the SQL SERVER AGENT service also.
 
Solution.
Please, make sure you specify a file name when backing up to disk. There's no 
default file name for backups.
Assign proper permissions to MSSQLSERVER service and SQL SERVER AGENT service 
Windows accounts. The following article may help you perform this task:
Configure Windows Service Accounts and Permissions.