SDCard Samsung EVO+ 32GB Command line used: iozone -e -I -a -s 100M -r 16k -r 512k -r 1024k -i 0 -i 1 -i 2 -f /sdcard/test random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 16 8490 9201 14664 14678 14657 8770 102400 512 20849 21052 22413 22475 22452 20742 102400 1024 15644 18549 22679 22703 22702 20718 USB2.0 Samsung 840 EVO 256GB Command line used: iozone -e -I -a -s 100M -r 16k -r 512k -r 1024k -i 0 -i 1 -i 2 -f /ssd/test random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 16 12117 13698 17767 17723 17664 13656 102400 512 24677 25608 34597 35794 34695 24982 102400 1024 24586 24179 33259 34175 33140 24181