Ahh i see. I may already be seeing this issue on my Fileserver so you've given me an excellent point of consideration. Multiplexing may need to be turned down to balance in this case.
Well considering my network design I don't see there being a bottle neck there, but I am continuing to monitor it.
The media servers are configured with dual Gig NIC teams . Some clients are configured to run through a dedicated backup VLAN. Both the client and Media servers don't seem to have a problem there. I think also if that was a problem I would see a variance in throughput at different times and scenarios.
Ok, well let me throw a new aspect to this and possibility rid myself of the shoeshine effect... I've been testing a NetApp Filer (NAS) to be used as a DSSU. When using a DSSU I am precompiling the backup images and later sending them to Tape. If I use this method I shouldn't incur additional fragementation and my restore time should remain excellent (Especially if I have a couple days ready on disk). What do you think??? Shouldn't this allow for multiplexing without the downside?