Nfs – Symantec Backup Exec can’t see network shares

Have you checked with Dell Support yet? First thing may be to try and update the firmware of the drive and autoloader. Secondly, is Windows using the Backup Exec Driver for the library and drive or Dell provided drivers? You may try switching between those to see if that improves things.

Try logging onto a computer as your Veritas user and confirm you are in fact able to browse to the data you're trying to back up, and try copying something from the network share to the computer. Also check you can browse to the NAS share and create files on that.

On your Backup Exec Media Server, try and browse to the root of \\NSS324. I don't know about this particular NAS, but if it's a Linux based NAS, I have seen those sometimes either not register themselves in DNS properly (or at all) or they don't consistently answer to their assigned name. If that doesn't work, you might want to try a fully qualified name (i.e \\NSS324.corp.acme-widgets.com (obviously replace that with your actual FQDN)).

In your B2D media, there is no need to map the share on the NAS to a Windows drive letter - Backup Exec will be perfectly happy with simply \\NSS324\IT_Admin\Backup.

I've experienced some idiocy from the Backup Exec interface before, where it claimed the user I has specified as the backup user didn't have enough permission (when it really did). If I ran the job manually, it backed up everything and the job completed successfully (confirmed with a restore).

I've also found any errors in the Backup Exec job log are more useful than the error messages you get when setting up a job. It might be worth setting up the job and ignoring any permission errors you get and run it anyway so you can interrogate the job log. Any errors or warnings in the job log generally point to a Symantec KB article, which admittedly isn't always helpful, but might prompt you to think about something you maybe overlooked.