In trying to setup back up device, net use command throws operating system error 53 when passing in a unc So I'm trying to use XP_CMDSHELL to set up my drive for using a backup.  I already have the drive mapped, but per http://blogs.msdn.com/b/varund/archive/2009/06/04/backup-sql-server-database-to-a-share-drive-on-another-server.aspx, I figured I'd need to mount the drive using net use.

But when I do, I get System error 53, 'The network path was not found.'

EXEC XP_CMDSHELL 'net use S: \\sql-backup'


I know this unc is accessible from the server because it is mounted as a network share on the sql server.

Any ideas why the unc is unreachable?
You have to give it both the server name and a shared folder, i.e., \\Server\SharedFolder.