Hello Franco,
Please refer to the following technote.
When performing an Eject job in Backup Exec (tm) 9.x / 10.0 for Windows Servers on a Dell PowerVault 110T-LTO2 device, Event ID 33152 is reported in the Microsoft Windows Event Log.
http://support.veritas.com/docs/264273
Hope this helps.
We suggest that you uncheck the Write Scsi Pass through mode in the device Properties.
Try a bakup afresh.
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