Yes, I did think about that before trying it but my current testing is to make best use of available storage capacity, with a little bonus of having great throughput as well.
What will be interesting to see is the transform performance though as, thinking about it now, I'll still be in a situation where BOTH repositories are hit with simultaneous I/O which I guess is where the concept of performance would make the biggest difference.
However, I did do some testing to a SOBR with one repo for full and the other for incremental and didn't notice any real perforamnce difference (for transforms) compared to just sending everything to a single repo. However, that was with a single big backup file configured whereas for this test I've enabled per-vm backups.
Would you expect much difference in performance to a single full/incr pair of repos if switched to per-vm?
[New Sig: PLEASE get GFS tape support for incrementals!!!]