In advanced mode the stats counter hostadapter is available which shows FC and SAS port statistics. E.g.:
*> stats show -c hostadapter
Instance total_reads total_writes bytes_read bytes_writte max_link_dat
/s /s /s /s KB/s
3a 63 79 645998 1023992 250000
3b 3 12 18589 274200 250000
3c 597 93 3922462 4217835 250000
3d 0 13 4647 339265 250000
0c 57 80 604170 924846 250000
0d 642 57 3671499 2100655 250000
0a 1367 101 9885163 6685640 1500000
0b 3188 78 20355908 8988202 1500000