Backup size exceeding tape size

I have a backup which is too large for the size of the backup tape.

The backup fails at 1,020,514,340,582 bytes approximately.

I ran a test run for media capcity check to complete individual job and it reports as 752,413,518,012.  I'm not too sure if the test run is acurate but the two dont appear to match up.

I added the below exclusions in on Friday but am now out of ideas other than excluding the actual data.  Is anyone able to give me any pointers as to if the test run is acurate or if my exclusions are incorrect perhaps to free up more space.

thanks

Anthony

• \\*\*\**\EventCache\*.*
• \\*\*\**\RECYCLER\*.*
• \\*\*\**\Temporary Internet Files\*.*
• \\*\*\**\WUTemp\*.*
• \\*\*\win*\system32\wbem\*.*
• \\*\*\win*\$*$\*.*
• \\*\*\**\Temp\*.*
• \\*\*\win*\system32\dhcp\tmp.edb
• \\*\*\win*\**\Local Settings\temp\*.*
• \\*\*\Documents and Settings\**\Local Settings\Temp\*.*

• \\*\*\users\**\Local Settings\Temp\*.*

• \\*\*\win*\system32\spool\*.*
• \\*\*\win*\system32\LogFiles\*.*
• \\*\*\win*\Security\*.log
• \\*\*\pagefile.sys
• \\*\*\**\VxPushRA\*.*
• \\*\*\**\*.iso
• \\*\*\**\Exchange Server\**\MDBTEMP\*.*
• \\*\*\**\Exchange Server\**\Queue\*.*
• \\*\*\**\windows\softwaredistribution\*.*

• \\*\*\users\**\Downloads\*.*
• \\*\*\documents and settings\**\Downloads\*.*