Backup exec 10d Full backup and exchange mailbox backup fail

Hi All,

I am using Symantec Backup Exec 10d for Windows Servers which is running on Server 2003 Standard version to do backup for 9 different servers. Now I have problem on Monday to Sunday exchange mailbox backup and Saturday full backup (mainly for SQL server). I have attached Job log for your reference.

(Server: "BKSVR") (Job: "Saturday Full BKUP") Saturday Full BKUP -- The job failed with the following error: The directory or file was not found, or could not be accessed.

(Server: "BKSVR") (Job: "Friday Exchange Mailbox BKUP") Friday Exchange Mailbox BKUP -- The job failed with the following error: The directory is invalid.\

Kindly advice me. Thank you.