dsmnas1# diskinfo -t /dev/da1
/dev/da1
        512             # sectorsize
        293621948416    # mediasize in bytes (273G)
        573480368       # mediasize in sectors
        70279           # Cylinders according to firmware.
        255             # Heads according to firmware.
        32              # Sectors according to firmware.

Seek times:
        Full stroke:      250 iter in   2.384098 sec =    9.536 msec
        Half stroke:      250 iter in   2.414547 sec =    9.658 msec
        Quarter stroke:   500 iter in   3.991588 sec =    7.983 msec
        Short forward:    400 iter in   1.934135 sec =    4.835 msec
        Short backward:   400 iter in   2.062580 sec =    5.156 msec
        Seq outer:       2048 iter in   2.068424 sec =    1.010 msec
        Seq inner:       2048 iter in   2.095036 sec =    1.023 msec
Transfer rates:
        outside:       102400 kbytes in   2.947104 sec =    34746 kbytes/sec
        middle:        102400 kbytes in   2.264205 sec =    45226 kbytes/sec
        inside:        102400 kbytes in   2.957035 sec =    34629 kbytes/sec