A call for benchmarks or backup metrics.

I was wondering if anyone has any metrics for NDMP backups to LTO-2 
drives. Currently we are using an ADIC Scalar 1000. Our filers are 
directly connected to the drives in our ADIC. We are using AIT-3 
currently, but are moving to LTO-2, and am looking to get some metrics 
on what to expect on backups.

Megs per second? Can't really think of any other metrics off-hand, but 
if you have any useful information, I would appreciate it very much.

Thanks,
Jason