I am running some comparisons on a HP ML570 box. We have one 36gb (8GB luns, 0+1) drive on the company EMC Symmetrix attached by two emulex 9802 fibers with powerpath. We also have 400GB drive with 8 x 72gb 15k local attach scsi disks running a raid 5. When I run comparisons, the local attached disk is twice as fast as the SAN. Should this be? Do you think there is some configuration changes we should be making on the Symmetrix or on the HBAs?