Thanks Andre.
netIO test between Server1 and Storage1 resulted in approx 110 MBs for both Rx and Tx.
netIO test between FileServer and Server1 had mixed results. FileServer Rx was approx 100 MBs, however, its Tx averages less than 10 MBs.
FileServer has large number of small files. Backup Exec took 40 hours to backup approx 2 TB of data to a tape library that was hooked to the fileserver locally. It was an old version of backup exec.
FileServer has 2 GB of RAM and it shows over 1GB as free. CPU average in the past two minutes is around 10%. Different volumes in the fileserver are iSCSI LUNs mounted from different SAN nodes.
Should I be changing my NIC card on the file server? Suggestions on how to proceed from here will be appreciated!