We are currently performing time studies on our LTO throughhput and are having issues. They are only having throughput of around 2.5MB Sec. We are running Veritas Netbackup DC 4.5fp3 and are running on a 100mg network lines that are dedicated for backups. Our NETBUFFER size is currently at 65536 and NUMBER_DATA_BUFFERS is 16. Should we change this? If so will this significantly affect the actual Server I/O? The media servers are running important applications that cannot be interrupted. Thanks in Advance for any help!