The LTO so far, no discernable performance boost... Various readings though ranging from 50MB/min to 850MB/min? Currently backing up +80GB on 5 servers estimated completion time is 30hrs! Gonna run more tests, something ain't groovy here.

That's pretty slow. I'm using SCSI Seagate NS20 Travan tape drives and they average 60MB/min for a local backup and 30MB/min for backups through a switched 100MBits connection using Veritas Backup Exec and the Backup Agents on the remote servers.

I would have hoped for at least a couple of 100MB/min on the minimum side (unless the network connection is the bottleneck)
There are two types of vessels, submarines and targets.