Backup Exec 2010 Weekly job failure, error code: E00084F4

We use Symantec Backup Exec 2010 to backup to a Netgear ReadNAS which has been working fine, up to now.  The daily incremental jobs always work, but I get a failure on the weekly full back up job every time.  The byte count looks right and it runs in about the same time it used to take, but I always get an error E00084F4.

I am using a dedicated domain account for Backup Exec services which has full access, but still I get the failure.  Here's some more info:

Job ended: 20 November 2010 at 10:55:32
Completed status: Failed
Final error: 0xe00084f4 - An unknown error has occurred.
Final error category: System Errors

Backup- \\ServerName\E:Storage device "Weekly Backup" reported an error on a request to write a media location identifier (file mark).

Error reported:

The specified network name is no longer available.

V-79-57344-34036 - An unknown error has occurred.

LVL 3
-Juddy-Asked:
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-Juddy-Author Commented:
Solved it.  I needed to use iSCSI on the NAS and format the partition as NTFS, Backup Exec doesn't work properly on non  NTFS backup to disk partitions.
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Chris OldeSystem-/networkengineerCommented:
It looks like the Backup client cannot resolve the servername of the NAS from the DSN-server.

If you replace the servername by the IP-adres (I presume you have given the NAS a static IP-adress) do you still get the error??
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-Juddy-Author Commented:
I cannot change the path name of the backup to disk folder, it's greyed out but I have added a route in the local hosts file to see if this makes any difference.
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-Juddy-Author Commented:
Changed to IP address, still no luck.
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-Juddy-Author Commented:
Fixed myself.
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