Hey HP
The good news is that if you are running a local backup, and you are getting data speeds to your tape drive, that the issue should not be with your controller/drivers.
Its probably moreso with your network settings.
In Windows, are your Gig NICs set to AutoNegotiate Speeds, or set to 1000MB?
Do you have multiple NICs in this server that is backing up?
In the BE backup job, you can specify which NIC in particular you are using for the backup.
Some other people mentioned in some threads that if you go into the NIC settings in Windows, and
have it talk at Half Duplex, that there is less chatter and sometimes can help speed things up.
Every time I tried this (which turned out wasnt my problem anyways) I notcied that if you drop to half duplex,
that you also drop down to the 100Megabit range for network speeds.
It is still worth a try, becasue the Remote speeds you are getting are pretty low.