I have tested this scenario moving to scsi connected 3590e's and fc
connected 3590e's.  Using scsi to got about 20Mb/s and fc about 25Mb/s.  I'm
using hardware compressions.  I haven't been able to get the high levels of
throughput the IBM claims you can get from moving to fc. Although I haven't
tried testing using the move data command yet.  My test were coming from my
disk pool to tape.